chore: add pull request template

Author: agalwood

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,16 @@
+<!-- You can erase any parts of this template not applicable to your Pull Request. -->
+
+## Description
+<!-- Write a brief description of the changes introduced by this PR -->
+
+## Related Issues
+<!--
+  Link to the issue that is fixed by this PR (if there is one)
+  e.g. Fixes #1234, Addresses #1234, Related to #1234, etc.
+-->
+
+### Checklist:
+
+* [ ] Have you checked to ensure there aren't other open [Pull Requests](../../../pulls) for the same update/change?
+* [ ] Have you linted your code locally prior to submission?
+* [ ] Have you successfully ran app with your changes locally?