added pull request template (#213)

pull_request_template.md

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+# Pull Request Template
+
+## Description
+
+Please include a summary of the change and which issue is fixed (if applicable). Also include relevant context or motivation for the change.
+
+- Fixes #(issue)
+- Closes #(issue)
+
+## Type of Change
+
+Please check the relevant options:
+
+- [ ] Bug fix
+- [ ] New feature
+- [ ] Code cleanup/refactor
+- [ ] Documentation update
+- [ ] Test coverage
+- [ ] Dependency update
+- [ ] Configuration change
+- [ ] Other (please describe):
+
+## How Has This Been Tested?
+
+Please describe the tests you ran to verify your changes:
+
+- [ ] Manual testing
+- [ ] Other:
+
+## Screenshots (if applicable)
+
+Include screenshots or GIFs to help explain your changes visually.
+
+## Checklist
+
+- [ ] My code follows the project style guidelines
+- [ ] I have performed a self-review of my code
+- [ ] I have commented my code where necessary
+- [ ] I have made corresponding changes to the documentation
+- [ ] My changes generate no new warnings or errors
+- [ ] I have added tests that prove my fix or feature works
+- [ ] New and existing tests pass locally with my changes
+
+## Additional Comments
+
+Add any other context or questions here.
+
+---
+
+> Thank you for your contribution! 🎉