docs: Add pull request template

This template provides a comprehensive structure for PRs including:
- Clear description and issue linking
- Type of change classification
- Implementation details
- Testing information
- Extensive checklist for code quality, documentation, and testing
- Space for screenshots and additional notes

This follows the PR guidelines defined in CLAUDE.md.

Author: shafiqahmeddev

.github/pull_request_template.md

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+# Pull Request
+
+## Description
+Please include a summary of the changes and which issue is fixed. Include relevant motivation and context.
+
+Fixes #(issue number)
+
+## Type of Change
+Please delete options that are not relevant.
+
+- [ ] 🐛 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 style update (formatting, renaming)
+- [ ] ♻️ Refactoring (no functional changes)
+- [ ] ⚡ Performance improvement
+- [ ] ✅ Test addition or update
+- [ ] 🔧 Configuration change
+
+## Implementation Details
+Describe the technical details of your implementation:
+- Key changes made
+- New files/modules added
+- Modified components
+- Algorithms or approaches used
+
+## Testing
+Please describe the tests that you ran to verify your changes:
+
+- [ ] Unit tests pass (`pytest tests/unit/`)
+- [ ] Integration tests pass (`pytest tests/integration/`)
+- [ ] Manual testing completed
+- [ ] New tests added for new functionality
+
+**Test Configuration**:
+- Python version:
+- Operating System:
+
+## Checklist
+Please review and check all applicable items:
+
+### Code Quality
+- [ ] My code follows the style guidelines of this project (PEP 8, Black formatting)
+- [ ] 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 or errors
+- [ ] I have added type hints where applicable
+
+### Documentation
+- [ ] I have made corresponding changes to the documentation
+- [ ] I have updated the README.md if needed
+- [ ] I have added/updated docstrings for new functions/classes
+- [ ] I have updated CLAUDE.md if this introduces new development practices
+
+### 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 edge cases to my tests
+- [ ] Code coverage has not decreased
+
+### Dependencies
+- [ ] I have updated requirements.txt if new dependencies were added
+- [ ] I have updated requirements-dev.txt if new dev dependencies were added
+- [ ] All dependencies are properly versioned
+
+## Screenshots/Output (if applicable)
+Add screenshots or command output to help explain your changes.
+
+## Additional Notes
+Any additional information that reviewers should know.
+
+## Review Request
+Please tag specific people if you'd like their review:
+- @username for specific expertise
+
+---
+**By submitting this PR, I confirm that my contribution is made under the terms of the project's license.**