move pull request template (#1578)

.github/PULL_REQUEST_TEMPLATE.md

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+## PR Type
+What kind of change does this PR make?
+
+<!-- Check the one that applies to this PR using "[x]". -->
+
+- [ ] Bug fix
+- [ ] Feature
+- [ ] Refactor / code style change (no functional or public API changes)
+- [ ] Other
+
+
+## PR Checklist
+Check your PR fulfills the following:
+
+<!-- For draft PRs check the boxes as you complete them. -->
+
+- [ ] Tests for the changes have been added / updated.
+- [ ] Documentation comments have been added / updated.
+- [ ] A changelog entry has been made for the appropriate packages.
+
+
+## Overview
+<!-- Describe the current and new behavior. -->
+<!-- Emphasize any breaking changes. -->
+
+
+<!-- If this PR fixes or closes an issue, reference it here. -->
+<!-- Closes #000 -->