Add comprehensive pull request template

.github/pull_request_template.md

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+# Pull Request
+
+## 📋 Description
+
+Please provide a clear and concise description of the changes in this pull request.
+
+**Related Issue(s):** 
+- Fixes #(issue number)
+- Closes #(issue number)
+- Addresses #(issue number)
+
+## 🔄 Type of Change
+
+Please delete options that are not relevant and check the appropriate box:
+
+- [ ] 🐛 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 (changes to documentation only)
+- [ ] 🎨 Style/formatting changes (code style, formatting, missing semi-colons, etc)
+- [ ] ♻️ Code refactoring (no functional changes, no api changes)
+- [ ] ⚡ Performance improvements
+- [ ] 🧪 Adding or updating tests
+- [ ] 🔧 Configuration changes
+- [ ] 🗄️ Database schema changes
+
+## 🧪 Testing
+
+Please describe the tests that you ran to verify your changes and provide instructions so others can reproduce.
+
+### Test Configuration:
+- [ ] Unit tests pass (`pytest`)
+- [ ] Integration tests pass
+- [ ] Manual testing completed
+- [ ] API endpoints tested with Swagger/Postman
+- [ ] Database migrations tested
+
+### Test Instructions:
+```bash
+# Example test commands
+pytest tests/test_your_feature.py
+curl -X GET "http://localhost:8000/api/v1/todos"
+```
+
+## 📝 Checklist
+
+Please check all that apply:
+
+### Code Quality
+- [ ] My code follows the style guidelines of this project
+- [ ] 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
+- [ ] Code has been formatted with Ruff (`ruff format .`)
+- [ ] Code has been linted with Ruff (`ruff check . --fix`)
+
+### Documentation
+- [ ] I have updated the README.md if needed
+- [ ] I have updated API documentation if needed
+- [ ] I have added/updated docstrings for new functions
+- [ ] I have updated the CONTRIBUTING.md if needed
+
+### Database Changes
+- [ ] I have created appropriate database migrations
+- [ ] Migration files include both upgrade and downgrade functions
+- [ ] I have tested the migration on a development database
+- [ ] I have updated the database schema documentation
+
+### Testing
+- [ ] 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 added integration tests for new endpoints
+- [ ] I have tested error handling and edge cases
+
+## 📸 Screenshots (if applicable)
+
+If your changes include UI modifications or new API responses, please add screenshots here.
+
+## 🔗 Additional Context
+
+Add any other context about the pull request here. This could include:
+
+- Performance implications
+- Security considerations
+- Backward compatibility notes
+- Deployment considerations
+- Future improvements or follow-up tasks
+
+## 📋 Review Notes
+
+Please mention anything specific you'd like reviewers to focus on:
+
+- [ ] Pay special attention to [specific area]
+- [ ] Verify [specific functionality]
+- [ ] Check [specific edge case]
+
+## 🚀 Deployment Notes
+
+Any special deployment considerations or steps:
+
+- [ ] Requires database migration (`alembic upgrade head`)
+- [ ] Requires environment variable updates
+- [ ] Requires dependency updates (`pip install -r requirements.txt`)
+- [ ] No special deployment steps needed
+
+---
+
+**Additional Notes:**
+<!-- Add any additional information that would be helpful for reviewers -->
+
+By submitting this pull request, I confirm that:
+- [ ] I have read and agree to follow the [Code of Conduct](CODE_OF_CONDUCT.md)
+- [ ] I have read and followed the [Contributing Guidelines](CONTRIBUTING.md)
+- [ ] I understand that this project is released under the MIT License