PYTHON-5579: Add Pull Request Template (mongodb#429)

Author: Jibola

.github/workflows/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,26 @@
+JIRA TICKET
+
+## Changes in this PR
+
+<!-- What changes did you make to the code? What new APIs (public or private) were added, removed, or edited to generate the desired outcome explained in the above summary? -->
+
+## Test Plan
+
+<!-- How did you test the code? If you added unit tests, you can say that. If you didn’t introduce unit tests, explain why. All code should be tested in some way – so please list what your validation strategy was. -->
+
+## Checklist
+
+<!-- Do not delete the items provided on this checklist -->
+
+### Checklist for Author
+
+- [ ] Did you update the changelog (if necessary)?
+- [ ] Is the intention of the code captured in relevant tests?
+- [ ] If there are new TODOs, has a related JIRA ticket been created?
+
+### Checklist for Reviewer
+
+- [ ] Does the title of the PR reference a JIRA Ticket?
+- [ ] Do you fully understand the implementation? (Would you be comfortable explaining how this code works to someone else?)
+- [ ] Have you checked for spelling & grammar errors?
+- [ ] Is all relevant documentation (README or docstring) updated?