Workflow: Changing the PR template

.github/pull_request_template.md

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+## Description
+
+<!--If this fixes an issue then fill this, otherwise DELETE the line below -->
+Fixes #
+
+## Interface impacts
+<!-- API changes, file format updates, coordination of changes with the community. -->
+
+## Testing
+<!-- If relevant describe any special setup for testing. -->
+
+### Unit tests
+<!-- At least one of these must be checked if unit tests exist. DELETE the unchecked/untested options. -->
+- [ ] No unit tests
+- [ ] Mac
+- [ ] Linux
+- [ ] Windows
+
+Independent check of unit tests by [REVIEWER NAME]
+- [ ] [PLATFORM]:
+
+### Functional tests
+<!-- Describe and document results of any functional tests, otherwise leave the text below -->
+No functional testing.