add pr template (#182)

Author: sonaljain0

.github/pull_request_template.md

@@ -0,0 +1,12 @@
+### ENSURE THE FOLLOWING ARE MET:
+Below is a brief summary of PR requirements ([full list][checklist]).
+
+- [ ] Your PR title summarizes the changes at a high level (not simply "updated X" or "changes Y")
+- [ ] Your PR description links to the issue/design. If not available, includes a full description for the change.
+- [ ] Your code contains relevant unit tests.
+
+By opening this PR for review, the author has agreed that these criteria must be met.
+
+By approving this PR, the reviewers have also agreed these criteria have been met and it is ready to be merged.
+
+[checklist]: https://github.ibm.com/alchemy-containers/armada-ironsides/wiki/PR-submission-and-Code-Review-Checklist