chore: add pull request template

.github/pull_request_template.md

@@ -0,0 +1,32 @@
+<!-- PR title format: follow Conventional Commits style, e.g.
+     feat: add new postgres minor release images
+     fix: correctly mark stale instances as unknown
+     docs: add database migration guide
+     Common types: feat, fix, docs, chore, test, refactor, build(release)
+     See: https://www.conventionalcommits.org/en/v1.0.0/#summary
+-->
+## Summary
+
+<!-- One or two sentences. What does this PR do? -->
+
+## Changes
+
+<!-- High-level bulleted list of what changed. Keep it succinct. -->
+- ...
+
+## Testing
+
+<!-- List commands and manual steps (e.g. `go test ./...`, E2E flows). -->
+- ...
+
+## Checklist
+
+- [ ] Tests added or updated (unit and/or e2e, as needed)
+- [ ] Documentation updated (if needed)
+- [ ] Issue is linked (branch name or URL in PR description)
+- [ ] [Changelog](https://github.com/pgEdge/control-plane/blob/main/docs/development/development.md#pull-requests) entry added for user-facing behavior changes
+- [ ] Breaking changes (if any) are clearly called out in the PR description
+
+## Notes for Reviewers
+
+<!-- Anything that will help reviewers: risky areas, follow-ups, usage instructions -->