This PR adds a template for PR descriptions, aimed to provide suffici…

…ent details

about the changes being made.

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,19 @@
+# Description
+
+Please include a summary of relevant context/issue and your changes.
+
+# Tests
+
+Please describe the tests that you ran on Cloud VM to verify changes.
+
+**Instruction and/or command lines to reproduce your tests:** ...
+
+**List links for your tests (use go/shortn-gen for any internal link):** ...
+
+# Checklist
+
+Before submitting this PR, please make sure (put X in square brackets):
+- [ ] I have performed a self-review of my code.
+- [ ] I have necessary comments in my code, particularly in hard-to-understand areas.
+- [ ] I have run one-shot tests and provided workload links above if applicable. 
+- [ ] I have made or will make corresponding changes to the doc if needed.