Update feature_request.md with sparse checkout warning

Added warning about sparse checkout to feature request template.

Signed-off-by: Lee Calcote <lee.calcote@layer5.io>

Author: leecalcote

.github/ISSUE_TEMPLATE/feature_request.md

@@ -27,3 +27,13 @@ assignees: ''
    - Layer5 documentation [site](https://docs.layer5.io) and [source](https://github.com/layer5io/docs/)
 - 🎨 Wireframes and [designs for Layer5 site](https://www.figma.com/file/5ZwEkSJwUPitURD59YHMEN/Layer5-Designs) in Figma [(open invite)](https://www.figma.com/team_invite/redeem/qJy1c95qirjgWQODApilR9)
 - 🙋🏾🙋🏼 Questions: [Layer5 Discussion Forum](https://discuss.layer5.io) and [Layer5 Community Slack](http://slack.layer5.io)
+
+> [!WARNING]
+>  Before cloning this repo to your local machine, ensure that you do so sparsely or your clone will take a long time to download / sync.
+>
+> Example of a sparse checkout:
+> 
+> ```shell
+> git clone --filter=blob:none --sparse https://github.com/layer5labs/meshery-extensions-packages
+> git sparse-checkout add assets
+> ```