Add pr template (#37343)

Author: maxi297

.github/pull_request_template.md

@@ -0,0 +1,28 @@
+## What
+<!--
+* Describe what the change is solving. Link all GitHub issues related to this change.
+-->
+
+## How
+<!--
+* Describe how code changes achieve the solution.
+-->
+
+## Review guide
+<!--
+1. `x.py`
+2. `y.py`
+-->
+
+## User Impact
+<!--
+* What is the end result perceived by the user?
+* If there are negative side effects, please list them. 
+-->
+
+## Can this PR be safely reverted and rolled back?
+<!--
+* If unsure, leave it blank.
+-->
+- [ ] YES 💚
+- [ ] NO ❌