Add CI/CD pipeline and SDLC docs

.github/PULL_REQUEST_TEMPLATE.md

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+## Description
+<!-- What does this PR do? -->
+
+## Type of Change
+- [ ] 🐛 Bug fix
+- [ ] ✨ New feature
+- [ ] 🔧 Refactor
+- [ ] 📚 Documentation
+- [ ] 🧪 Tests
+
+## Testing
+<!-- How was this tested? -->
+
+## Checklist
+- [ ] Code follows project style guidelines
+- [ ] Tests pass locally
+- [ ] Documentation updated (if needed)
+- [ ] No sensitive data exposed