Add pull request template

.github/pull_request_template.md

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+## Description
+
+<!-- Provide a brief description of the changes in this PR -->
+
+## Type of Change
+
+<!-- Mark the relevant option with an "x" -->
+
+- [ ] Bug fix (non-breaking change which fixes an issue)
+- [ ] New feature (non-breaking change which adds functionality)
+- [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
+- [ ] Documentation update
+- [ ] Code refactoring
+- [ ] Performance improvement
+- [ ] Test coverage improvement
+- [ ] CI/CD or build process change
+
+## Related Issue
+
+<!-- Link to the issue this PR addresses, if applicable -->
+<!-- Use "Fixes #123", "Closes #123", or "Related to #123" as appropriate -->
+
+Fixes #(issue number)
+
+## Changes Made
+
+<!-- List the specific changes made in this PR -->
+
+- [Brief description of change 1]
+- [Brief description of change 2]
+- [Brief description of change 3] 
+
+## Testing
+
+<!-- Describe the tests you ran to verify your changes -->
+
+- [ ] Existing tests pass (`make test`)
+- [ ] New tests added for new functionality
+- [ ] Manual testing performed
+
+### Test Configuration
+
+- Python version:
+- Operating system:
+
+## Checklist
+
+<!-- Mark completed items with an "x" -->
+
+- [ ] My code follows the style guidelines of this project
+- [ ] I have run `make lint` and addressed any issues
+- [ ] I have run `make type` and addressed any issues
+- [ ] I have performed a self-review of my own code
+- [ ] I have commented my code, particularly in hard-to-understand areas
+- [ ] I have made corresponding changes to the documentation
+- [ ] My changes generate no new warnings
+- [ ] I have added tests that prove my fix is effective or that my feature works
+- [ ] New and existing unit tests pass locally with my changes
+- [ ] I have run `make precommit` and all pre-commit hooks pass
+- [ ] Any dependent changes have been merged and published
+
+## Screenshots (if applicable)
+
+<!-- Add screenshots to help explain your changes, if applicable -->
+
+## Additional Notes
+
+<!-- Add any additional information that reviewers should know -->