Fixes #865 Enforces strict rules checklist while sending pull requests

Author: sudheesh001

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,10 @@
+### Short description
+I have:
+- [ ] There is a corresponding issue for this pull request.
+- [ ] Mentioned the Issue number in the pull request commit message `Fixes #<number> commit message`
+- [ ] There is only strictly only one commit per issue.
+
+### For the reviewers
+I have:
+- [ ] Reviewed this pull request by an authorized contributor.
+- [ ] The reviewer is assigned to the pull request.