docs: first draft of issue and PR template

.github/PULL_REQUEST_TEMPLATE/new_feature.md

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+## Description
+Brief description of the new feature.
+
+## Related Issue
+Addresses # (issue number)
+
+## Changes Made
+- List the changes made to implement the feature
+- Be specific about new files, modified files, and functionality added
+
+## Testing
+- How did you test the new feature?
+- What scenarios were covered?
+
+## Screenshots (if applicable)
+Add screenshots to demonstrate the new feature.
+
+## Checklist
+- [ ] My code follows the project's style guidelines
+- [ ] I have performed a self-review of my own code
+- [ ] I have commented my code, particularly in hard-to-understand areas
+- [ ] My changes generate no new warnings
+- [ ] I have added tests that prove my feature works
+- [ ] New and existing unit tests pass locally with my changes
+- [ ] I have updated the documentation accordingly