Pull request template (#673)

.github/pull_request_template.md

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+## Description
+
+<!-- Insert PR description-->
+
+## Type of change
+
+Please check the type of change your PR introduces:
+- [ ] :sunflower: Feature
+- [ ] :bug: Bugfix
+- [ ] :world_map: Documentation
+- [ ] :robot: Test
+- [ ] :hamster: Trivial/Minor
+
+## Issue(s)
+<!-- Can reference multiple issues. Use one of the following "magic words" - "closes, fixes" to auto-close the Github issue. -->
+
+#<issue>
+
+## Test Plan
+
+<!-- How will this be tested prior to merging.-->
+
+- [ ] :muscle: Manual
+- [ ] :zap: Unit test
+- [ ] :green_heart: E2E