Fixes #17080

Readded untouched pull_request_template.md

Author: Lazarus535

pull_request_template.md

@@ -0,0 +1,16 @@
+<!--
+Thank you for submitting a pull request!
+
+Here's a checklist you might find useful.
+[ ] There is an associated issue that is labelled
+  'Bug' or 'help wanted' or is in the Community milestone
+[ ] Code is up-to-date with the `master` branch
+[ ] You've successfully run `jake runtests` locally
+[ ] You've signed the CLA
+[ ] There are new or updated unit tests validating the change
+
+Refer to CONTRIBUTING.MD for more details.
+  https://github.com/Microsoft/TypeScript/blob/master/CONTRIBUTING.md
+-->
+
+Fixes #