添加en和zh

en/.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,13 @@
+## What?
+* Describe high-level what changed as a result of these commits (i.e. in plain-english, what do these changes mean?)
+* Use bullet points to be concise and to the point.
+
+## Why?
+* Provide the justifications for the changes (e.g. business case). 
+* Describe why these changes were made (e.g. why do these commits fix the problem?)
+* Use bullet points to be concise and to the point.
+
+## References
+* Link to any supporting github issues or helpful documentation to add some context (e.g. stackoverflow). 
+* Use `closes #123`, if this PR closes a GitHub issue `#123`
+