chore: adds pull request template

Author: claymcleod

.github/pull_request_template.md

@@ -0,0 +1,22 @@
+_Describe the problem or feature in addition to a link to the issues._
+
+Before submitting this PR, please make sure:
+
+For external contributors:
+
+- [ ] You have not used AI on any parts of this pull request.
+
+For all contributors:
+
+- [ ] You have added a few sentences describing the PR here.
+- [ ] Your code builds clean without any errors or warnings.
+- [ ] You have added tests (when appropriate).
+- [ ] You have updated the README or other documentation to account for these
+      changes (when appropriate).
+- [ ] You have added an entry to the relevant `CHANGELOG.md` (see
+      ["keep a changelog"] for more information).
+- [ ] Your commit messages follow the [conventional commit] style.
+- [ ] Your PR title follows the [conventional commit] style.
+
+[conventional commit]: https://www.conventionalcommits.org/en/v1.0.0/#summary
+["keep a changelog"]: https://keepachangelog.com/en/1.1.0/