ci: add root-level PR template for auto-loading

GitHub only auto-fills PR descriptions from .github/PULL_REQUEST_TEMPLATE.md (root level), not from named templates in subdirectories.

Author: Ashutoshx7

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,66 @@
+## Description
+
+<!--- Describe the changes introduced by this pull request. -->
+<!--- Explain what problem it solves or what feature/fix it adds. -->
+
+## Related Issue
+
+<!--- If this pull request is related to a specific issue, reference it here using #issue_number. -->
+<!--- For example, "Fixes #123" or "Addresses #456". -->
+
+This PR fixes #
+
+## PR Category
+
+<!--- ⚠️ CI ENFORCED: You MUST check at least ONE category below or the CI will fail. -->
+<!--- Check all categories that apply to this pull request. -->
+
+-   [ ] 🐛 Bug Fix — Fixes a bug or incorrect behavior
+-   [ ] ✨ Feature — Adds new functionality
+-   [ ] ⚡ Performance — Improves performance (load time, memory, rendering, etc.)
+-   [ ] 🧪 Tests — Adds or updates test coverage
+-   [ ] 📝 Documentation — Updates to docs, comments, or README
+
+## Changes Made
+
+<!--- Provide a summary of the changes made in this pull request. -->
+<!--- Include any relevant technical details or architecture changes. -->
+
+-   Change 1
+-   Change 2
+-   ...
+
+## Testing Performed
+
+<!--- Describe the testing that you have performed to validate these changes. -->
+<!--- Include information about test cases, testing environments, and results. -->
+
+-   Tested feature X in scenario Y.
+-   Ran unit tests for component Z.
+-   Tested on browsers A, B, and C.
+-   ...
+
+## Checklist
+
+<!--- Please check the boxes that apply to this pull request. -->
+<!--- You can add or remove items as needed. -->
+
+-   [ ] I have tested these changes locally and they work as expected.
+-   [ ] I have added/updated tests that prove the effectiveness of these changes.
+-   [ ] I have updated the documentation to reflect these changes, if applicable.
+-   [ ] I have followed the project's coding style guidelines.
+-   [ ] I have run `npm run lint` and `npx prettier --check .` with no errors.
+-   [ ] I have addressed the code review feedback from the previous submission, if applicable.
+
+## Additional Notes for Reviewers
+
+<!--- Provide any additional context or notes for the reviewers. -->
+<!--- This might include details about design decisions, potential concerns, or anything else relevant. -->
+
+---
+
+Thank you for contributing to our project! We appreciate your help in improving it.
+
+📚 See [contributing instructions](https://github.com/sugarlabs/musicblocks/blob/master/README.md).
+
+🙋🏾🙋🏼 Questions: [Community Matrix Server](https://matrix.to/#/#sugar:matrix.org).