feat: add pull request template (#511)

Co-authored-by: James Garbutt <43081j@users.noreply.github.com>

Author: dreyfus92

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,33 @@
+## What does this PR do?
+
+<!--
+  Describe the change and why it's needed. Link to a related issue or discussion.
+  If there is no issue, please explain why one isn't needed.
+-->
+
+Closes #
+
+## Type of change
+
+<!-- Check one. -->
+
+- [ ] Bug fix
+- [ ] Feature
+- [ ] Refactor (no behavior change)
+- [ ] Documentation
+- [ ] Performance improvement
+- [ ] Tests
+- [ ] Chore (dependencies, CI, tooling)
+
+## Checklist
+
+- [ ] `pnpm test` passes (or targeted tests for my change)
+- [ ] `pnpm format` has been run
+- [ ] I have added/updated tests for my changes (if applicable)
+- [ ] I have added a changeset
+
+## AI-generated code disclosure
+
+<!-- If any part of this PR was generated by AI tools (Copilot, Claude, GPT, Cursor, etc.), check the box. This is fine — we just need to know so reviewers can pay extra attention to edge cases. -->
+
+- [ ] This PR includes AI-generated code