Add "Verification Process" section to pull request template

PULL_REQUEST_TEMPLATE.md

@@ -25,6 +25,20 @@ We must be able to understand the design of your change from this description. I
 
 <!-- What are the possible side-effects or negative impacts of the code change? -->
 
+### Verification Process
+
+<!--
+
+What process did you follow to verify that your change has the desired effects?
+
+- How did you verify that all new functionality works as expected?
+- How did you verify that all changed functionality works as expected?
+- How did you verify that the change has not introduced any regressions?
+
+Describe the actions you performed (e.g., buttons you clicked, text you typed, commands you ran, etc.), and describe the results you observed.
+
+-->
+
 ### Applicable Issues
 
 <!-- Enter any applicable Issues here -->