Adding template checkbox for new EWI-6 code review standards

Author: ijidak

.github/pull_request_template.md

@@ -1,8 +1,12 @@
+## Clever Coding Standards Agreement
+
+- [ ] Author and Review Statement, "We agree this code adheres to our [Clever Global Coding Standards](https://app.getguru.com/folders/ibabX5oT/Engineering-Standards-Best-Practices?activeCard=a8a444f4-9149-4ec7-a0fd-8ba42519d93e) and other applicable [Coding Standards](https://app.getguru.com/folders/ibabX5oT/Engineering-Standards-Best-Practices)"
+
 ## JIRA
 _If there was a JIRA ticket associated with this changes, please link it here._
 
 ## Overview
 _Give a high level description of your changes._
 
 ## Testing
-_Describe testing you did to ensure your changes work and that existing functionality was not broken by the changes._
+_Describe testing you did to ensure your changes work and that existing functionality was not broken by the changes._