Add pull request template

- Added pull request to encourage best contribution practices.

Signed-off-by: Avinal Kumar <[email protected]>

.github/pull_request_template.md

@@ -0,0 +1,21 @@
+<!-- Thank you for the pull request. Please fill this template as much as
+possible and delete unused parts. -->
+
+## Changes
+
+<!-- Describe your changes here. Ideally GitHub can get the description
+from your descriptive commit message(s). Link issues/PR that are relevant
+for your changes.-->
+
+
+## Submitter Checklist
+
+- [ ] Includes tests (if there is a feature changed/added)
+- [ ] Includes docs ( if changes are user facing)
+- [ ] I have tested my changes locally.
+
+## References
+
+<!-- Add any supporing links/screenshot/logs etc here. If not needed please
+delete this block.-->
+