Update and rename bug_report.md to bug_report.yml

Author: SableRaf

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,67 @@
+name: 🐛 Found a Bug
+description: Report broken or incorrect behavior in Processing 4. For help with your own code, please visit our forum at discourse.processing.org instead.
+labels: [bug]
+body:
+- type: checkboxes
+  id: sub-area
+  attributes:
+    label: Most appropriate sub-area of Processing 4?
+    description: You may select more than one.
+    multiple: true
+    options:
+        - Accessibility
+        - Core/Environment/Rendering
+        - Data
+        - Events
+        - Image
+        - IO
+        - Math
+        - Typography
+        - Utilities
+        - OpenGL
+        - Contributions Manager
+        - Export
+        - Build process
+        - Unit testing
+        - Internationalization
+        - Other (specify if possible)
+- type: input
+  attributes:
+    label: Processing version 
+    description: Go to Help > About Processing and look in the bottom-right corner for the version number. It also appears in the title bar of every editor window.
+  validations:
+    required: false
+- type: input
+  attributes:
+    label: Operating system 
+    description: "Ex: Windows/MacOSX/Linux/Android/iOS along with version"
+  validations:
+    required: false
+- type: textarea
+  attributes:
+    label: Steps to reproduce this 
+    description: Describe what steps will produce the bug.
+    value: |
+      "1.
+
+      2.
+
+      3."
+  validations:
+    required: true
+- type: textarea
+  attributes:
+    label: snippet
+    description: If applicable, include a code snippet which produces the error.
+    value: |
+      ```java
+      // Paste your code here :)
+      ```
+  validations:
+    required: false
+- type: textarea
+  attributes:
+    label: Additional context
+    description: Add any other context about the problem here.
+  validations:
+    required: false