feat: implement blog project with CI pipeline

.github/PULL_REQUEST_TEMPLATE.md

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+## Description
+<!-- Brief description of changes -->
+
+## Type of Change
+<!-- Mark with [x] -->
+- [ ] 🚀 Feature (`feat`)
+- [ ] 🐛 Bug Fix (`fix`)
+- [ ] 📝 Documentation (`docs`)
+- [ ] ♻️ Refactor (`refactor`)
+- [ ] 🎨 Code Style (`style`)
+- [ ] ✅ Tests (`test`)
+- [ ] 🔧 Chore (`chore`)
+
+## Checklist
+- [ ] Code follows project style guidelines (ruff, isort)
+- [ ] Tests added/updated (if applicable)
+- [ ] Documentation updated (if applicable)
+- [ ] Commit message follows convention (`type: description`)
+- [ ] Branch rebased to single commit before merge
+- [ ] No cache files in commit (`__pycache__`, `*.pyc`)
+
+## Testing
+<!-- Describe how changes were tested -->
+
+## Related Issues
+<!-- Link to issues if applicable -->
+Fixes #
+
+## Screenshots (if applicable)
+<!-- Add screenshots for UI changes -->