docs: clarify pre-contribution asking [IDE-1240] (#322)

docs: clarify pre-contribution asking

Updated CONTRIBUTING.md to clarify our expectations for changes and to ensure collaboration before work is done.
Added CODE_OF_CONDUCT.md and Contributor-Agreement.md.
Updated the PR template to point to CONTRIBUTING.md and CODE_OF_CONDUCT.md.

Author: rrama

.github/pull_request_template.md

@@ -4,6 +4,7 @@ _Provide description of this PR and changes, if linked Jira ticket doesn't cover
 
 ### Checklist
 
+- [ ] Read and understood the [Code of Conduct](https://github.com/snyk/snyk-eclipse-plugin/blob/main/CODE_OF_CONDUCT.md) and [Contributing Guidelines](https://github.com/snyk/snyk-eclipse-plugin/blob/main/CONTRIBUTING.md).
 - [ ] Tests added and all succeed
 - [ ] Linted
 - [ ] CHANGELOG.md updated

CODE_OF_CONDUCT.md

@@ -0,0 +1,128 @@
+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+We as members, contributors, and leaders pledge to make participation in our
+community a harassment-free experience for everyone, regardless of age, body
+size, visible or invisible disability, ethnicity, sex characteristics, gender
+identity and expression, level of experience, education, socio-economic status,
+nationality, personal appearance, race, religion, or sexual identity
+and orientation.
+
+We pledge to act and interact in ways that contribute to an open, welcoming,
+diverse, inclusive, and healthy community.
+
+## Our Standards
+
+Examples of behavior that contributes to a positive environment for our
+community include:
+
+* Demonstrating empathy and kindness toward other people
+* Being respectful of differing opinions, viewpoints, and experiences
+* Giving and gracefully accepting constructive feedback
+* Accepting responsibility and apologizing to those affected by our mistakes,
+  and learning from the experience
+* Focusing on what is best not just for us as individuals, but for the
+  overall community
+
+Examples of unacceptable behavior include:
+
+* The use of sexualized language or imagery, and sexual attention or
+  advances of any kind
+* Trolling, insulting or derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or email
+  address, without their explicit permission
+* Other conduct which could reasonably be considered inappropriate in a
+  professional setting
+
+## Enforcement Responsibilities
+
+Community leaders are responsible for clarifying and enforcing our standards of
+acceptable behavior and will take appropriate and fair corrective action in
+response to any behavior that they deem inappropriate, threatening, offensive,
+or harmful.
+
+Community leaders have the right and responsibility to remove, edit, or reject
+comments, commits, code, wiki edits, issues, and other contributions that are
+not aligned to this Code of Conduct, and will communicate reasons for moderation
+decisions when appropriate.
+
+## Scope
+
+This Code of Conduct applies within all community spaces, and also applies when
+an individual is officially representing the community in public spaces.
+Examples of representing our community include using an official e-mail address,
+posting via an official social media account, or acting as an appointed
+representative at an online or offline event.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported to the community leaders responsible for enforcement at
+`oss-conduct-reports@snyk.io`.
+All complaints will be reviewed and investigated promptly and fairly.
+
+All community leaders are obligated to respect the privacy and security of the
+reporter of any incident.
+
+## Enforcement Guidelines
+
+Community leaders will follow these Community Impact Guidelines in determining
+the consequences for any action they deem in violation of this Code of Conduct:
+
+### 1. Correction
+
+**Community Impact**: Use of inappropriate language or other behavior deemed
+unprofessional or unwelcome in the community.
+
+**Consequence**: A private, written warning from community leaders, providing
+clarity around the nature of the violation and an explanation of why the
+behavior was inappropriate. A public apology may be requested.
+
+### 2. Warning
+
+**Community Impact**: A violation through a single incident or series
+of actions.
+
+**Consequence**: A warning with consequences for continued behavior. No
+interaction with the people involved, including unsolicited interaction with
+those enforcing the Code of Conduct, for a specified period of time. This
+includes avoiding interactions in community spaces as well as external channels
+like social media. Violating these terms may lead to a temporary or
+permanent ban.
+
+### 3. Temporary Ban
+
+**Community Impact**: A serious violation of community standards, including
+sustained inappropriate behavior.
+
+**Consequence**: A temporary ban from any sort of interaction or public
+communication with the community for a specified period of time. No public or
+private interaction with the people involved, including unsolicited interaction
+with those enforcing the Code of Conduct, is allowed during this period.
+Violating these terms may lead to a permanent ban.
+
+### 4. Permanent Ban
+
+**Community Impact**: Demonstrating a pattern of violation of community
+standards, including sustained inappropriate behavior,  harassment of an
+individual, or aggression toward or disparagement of classes of individuals.
+
+**Consequence**: A permanent ban from any sort of public interaction within
+the community.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage],
+version 2.0, available at
+https://www.contributor-covenant.org/version/2/0/code_of_conduct.html.
+
+Community Impact Guidelines were inspired by [Mozilla's code of conduct
+enforcement ladder](https://github.com/mozilla/diversity).
+
+[homepage]: https://www.contributor-covenant.org
+
+For answers to common questions about this code of conduct, see the FAQ at
+https://www.contributor-covenant.org/faq. Translations are available at
+https://www.contributor-covenant.org/translations.

CONTRIBUTING.md

@@ -1,4 +1,42 @@
-# Contributing
+# Contributing to the Snyk IDE Extensions
+
+We welcome contributions, but please read first! To ensure a smooth process and that your valuable work aligns with our roadmap, please keep the following in mind to help manage expectations:
+
+## 1. Planning your changes
+
+Before undertaking any changes or new features, please discuss your plans with us. This helps align on scope, design, technical approach, and priority.  
+Even bug fixes can have unforeseen impacts or alternative solutions better suited for the codebase, so please ask first, we will be happy to discuss.  
+Please raise a request with [support](https://support.snyk.io). (Snyk employees, use `#ask-ide`)
+
+## 2. Where changes should be made
+
+Consider whether your proposed change should be implemented within the IDE extension(s) or in the shared Language Server and related stack.
+- [Snyk Language Server](https://github.com/snyk/snyk-ls)
+- [Go Application Framework](https://github.com/snyk/go-application-framework)
+- [Code Client Go](https://github.com/snyk/code-client-go)
+
+## 3. Cross-IDE consistency
+
+If your change is applicable to other Snyk IDE plugins as well, we may expect you to submit similar PRs for the other relevant IDE repositories after your initial PR has been reviewed and approved, as they will _usually_ need to be merged all at once or not at all.
+- [Snyk VSCode extension](https://github.com/snyk/vscode-extension)
+- [Snyk IntelliJ plugin](https://github.com/snyk/snyk-intellij-plugin)
+- [Snyk Visual Studio extension](https://github.com/snyk/snyk-visual-studio-plugin)
+
+## 4. Manual testing
+
+All changes must be thoroughly manually tested by you.  
+For visual changes the PR template asks for screenshots, so this is a good opportunity to snap them.
+
+## 5. Documentation changes
+
+Any user-facing changes will require [documentation](https://docs.snyk.io/) changes, which you will need to prepare.
+If you do not have access to our content management system (you are not a Snyk employee), please add the documentation changes required (including new wording and screenshots) to the PR description.
+
+We can instruct you on what to add to the CHANGELOG.md, so please ask.
+
+---
+
+# Making changes
 
 ## Configuring the plugin for local development
 

Contributor-Agreement.md

@@ -0,0 +1,61 @@
+This Contributor Licence Agreement (“Agreement”) sets out the terms under which contributions are made to open source projects of Snyk Ltd (“Snyk”) by or on behalf of the Contributor. This Agreement is legally binding on the Contributor.
+
+Who the “Contributor” is depends on whether the person submitting the contribution is a private individual acting on their own behalf, or is acting on behalf of someone else (for example, their employer). The “Contributor” in this Agreement is therefore either: (i) if the individual who Submits a Contribution does so on behalf of their employer or another Legal Entity, any Legal Entity on behalf of whom a Contribution has been received by Snyk; or in all other cases (ii) the individual who Submits a Contribution to Snyk. "Legal Entity" means an entity which is not a natural person (for example, a limited company or corporation).
+
+**1. Interpretation**
+
+The following definitions and rules of interpretation apply in this Agreement.
+
+1.1 Definitions:
+
+**Affiliates**: means, in respect of a Legal Entity, any other Legal Entities that control, are controlled by, or under common control with that Legal Entity.
+
+**Contribution**: means any software or code that is Submitted by the Contributor to Snyk for inclusion in a Project.
+
+**Copyright**: all copyright and rights in the nature of copyright subsisting in the Contribution in any part of the world, to which the Contributor is, or may become, entitled.
+
+**Effective Date**: the earlier of the date on which the Contributor Submits the Contribution, or the date of the Contributor’s acceptance of this Agreement.
+
+**Patent Rights**: any patent claims which the Contributor or its Affiliates owns, controls or has the right to grant, now or in the future, to the extent infringed by the exercise of the rights licensed under this Agreement.
+
+**Project**: a software project to which the Contribution is Submitted.
+
+**Submit**: means to submit or send to Snyk or its representatives by any form of electronic, verbal, or written communication, for example, by means of code repositories or control systems, and issue tracking systems, that are managed by or on behalf of Snyk.
+
+**2. Licence Grant**
+
+2.1 Copyright: The Contributor grants to Snyk a perpetual, irrevocable, worldwide, transferable, fully sublicenseable through multiple tiers, fee-free, non-exclusive licence under the Copyright to do the following acts, subject to, and in accordance with, the terms of this Agreement: to reproduce, prepare derivative works of, publicly display, publicly perform, communicate to the public, and distribute by any means Contributions and such derivative works.
+
+2.2. Patent Rights: The Contributor grants to Snyk a perpetual, irrevocable, worldwide, transferable, fully sublicenseable through multiple tiers, fee-free, non-exclusive licence under the Patent Rights to do the following acts, subject to, and in accordance with, the terms of this Agreement: to make, have made, use, sell, offer for sale, import and otherwise transfer the Contribution and the Contribution in combination with a Project (and portions of such combination).
+
+2.3 The Contributor acknowledges that Snyk is not obliged to include the Contribution in any Project.
+
+2.4 If Snyk includes the Contribution in a Project, Snyk may license the Contribution under any licence terms, including copyleft, permissive, commercial, or proprietary licenses, provided that it shall also license the Contribution under the terms of any licenses which are approved by the Open Source Initiative on or after the Effective Date, including both permissive and copyleft licenses, whether or not such licenses are subsequently disapproved (including any right to adopt any future version of a license if permitted).
+
+2.5 In the event that any moral rights apply in respect of the Contribution, the Contributor, being the sole author of the Contribution, waives all moral rights in respect of the use to be made of the Contribution under this Agreement to which the Contributor may now or at any future time be entitled.
+
+**3. Warranties and Disclaimers**
+
+3.1 The Contributor warrants and represents that:
+
+(a) it is the sole owner of the Copyright and any Patent Rights and legally entitled to grant the licence in section 2;
+
+(b) the Contribution is its own original creation;
+
+(c) the licence in section 2 does not conflict with or infringe any rights granted by the Contributor or (if applicable) its Affiliates; and
+
+(d) it is not aware of any claims, suits, or actions in respect of the Contribution.
+
+3.2 All other conditions, warranties or other terms which might have effect between the parties in respect of the Contribution or be implied or incorporated into this Agreement are excluded.
+
+3.3 The Contributor is not required to provide any support for the Contribution.
+
+**4. Other important terms**
+
+4.1 Assignment/Transfer: Snyk may assign and transfer all of its rights and obligations under this Agreement to any person.
+
+4.2 Further Assurance: The Contributor shall at Snyk’s expense execute and deliver such documents and perform such acts as may reasonably be required by Snyk for the purpose of giving full effect to this Agreement.
+
+4.3 Agreement: This Agreement constitutes the entire Agreement between the parties and supersedes and extinguishes all previous Agreements, promises, assurances, warranties, representations and understandings between them, whether written or oral, relating to its subject matter.
+
+4.4 Governing law: This Agreement and any dispute or claim (including non-contractual disputes or claims) arising out of or in connection with it or its subject matter or formation shall be governed by and construed in accordance with the law of England and Wales.