chore: add PR template

Author: adarshdigievo

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,46 @@
+<!-- Use "None" or "N/A" where appropriate. -->
+
+## Summary
+
+<!-- What changed and why? For bug fixes, describe the previous and expected behavior. Mention breaking changes to public methods, parameters, return values, exceptions, Python support, or dependencies, and any migration steps. -->
+
+## Type
+
+- [ ] Bug fix
+- [ ] Feature
+- [ ] Refactor / performance
+- [ ] Documentation / examples
+- [ ] Tests
+- [ ] Maintenance / packaging / CI
+
+## Related issue
+
+<!-- Link the issue, use "Closes #123" if fully resolved, or explain why there is no issue. -->
+
+## Affected SDK functionality
+
+- `serpapi` package version (if known):
+- Python version and operating system:
+- SDK methods or helpers affected:
+- SerpApi engine or endpoint involved (if applicable):
+- Other affected Python versions or environments (confirmed or suspected):
+
+## Testing
+
+<!-- List checks actually completed and their results. Include commands, Python versions tested, and reproduction steps where useful. State whether tests used mocked responses or live SerpApi requests. See CONTRIBUTING.md for test, documentation, and package build commands. Write "None" if no testing was done. -->
+
+- Human testing:
+- AI-executed testing:
+- CI results, failures, or tests skipped (with reasons):
+
+## AI disclosure
+
+<!-- List AI used for this contribution, or write "None". Use "Unknown" if a model/version is not exposed. -->
+
+- Model(s):
+- Harness/app(s) (e.g., Codex, Claude Code, Cursor):
+- Used for (e.g., coding, tests, review, documentation):
+
+## Evidence
+
+<!-- Include a minimal Python example, before/after output, traceback, or sanitized request/response when useful. Add screenshots for visible documentation changes. Remove API keys and private data, including values in request URLs and logs. Write "N/A" if not relevant. -->