Add feature pull request template

.github/PULL_REQUEST_TEMPLATE/feature.md

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+## 🚀 Feature
+
+### Description
+
+Provide a clear and concise description of the feature introduced in this pull request.
+
+### Motivation
+
+Why is this feature needed?
+What problem does it solve?
+
+### Changes
+
+List the main changes introduced:
+
+* Added ...
+* Implemented ...
+* Updated ...
+
+### Usage Example
+
+Show how the new feature can be used.
+
+```bash
+# example command
+example_command --flag
+```
+
+or
+
+```javascript
+// example usage
+exampleFunction()
+```
+
+### Screenshots / Demo (optional)
+
+If applicable, include screenshots, logs, or demo output.
+
+### Breaking Changes
+
+Does this change break existing functionality?
+
+* [ ] No
+* [ ] Yes (describe below)
+
+Description of breaking change (if any):
+
+---
+
+## ✅ Checklist
+
+* [ ] Code compiles/builds successfully
+* [ ] Code is formatted
+* [ ] Linting passes
+* [ ] Documentation updated
+* [ ] Tests added or updated (if applicable)
+* [ ] No breaking changes introduced
+
+---
+
+## 📎 Additional Notes
+
+Add any extra context, implementation details, or references here.