Add PR template (#554)

Signed-off-by: Alexey Oralov alexey.oralov@intel.com

.github/pull_request_template.md

@@ -0,0 +1,38 @@
+### Description 
+_Add comprehensive description of proposed changes_
+
+
+Fixes # - _issue number(s) if exists_
+
+### Type of change
+
+_Choose one or multiple, leave empty if none of the other choices apply_
+
+_Add respective label(s) to PR if you have permissions_
+
+- [ ] bug fix - _change which fixes an issue_
+- [ ] new feature - _change which adds functionality_
+- [ ] tests - _change in tests_
+- [ ] infrastructure - _change in infrastructure and CI_
+- [ ] documentation - _documentation update_
+
+### Tests
+
+- [ ] added - _required for new features and for some bug fixes_
+- [ ] not needed
+
+### Documentation
+
+- [ ] updated in # - _add PR number_
+- [ ] needs to be updated
+- [ ] not needed
+
+### Breaks backward compatibility
+- [ ] Yes
+- [ ] No
+- [ ] Unknown
+
+### Notify the following users
+_List users with `@` to send notifications_
+
+### Other information