single pr template (#1537)

* single pr template

* equivalent PRs

.github/pull_request_template.md

@@ -0,0 +1,48 @@
+## PR type
+
+**Select exactly one:**
+
+- [ ] Feature
+- [ ] Bug Fix
+- [ ] Infrastructure
+
+## Breaking API
+
+- [ ] This is a Breaking API change (Feature or Bug Fix).
+
+## Description
+
+<!--
+Describe what this PR changes and why.
+-->
+
+## Equivalent PRs
+
+<!--
+Link any equivalent PRs in a release candidate or developer branch.
+eg. #1245
+-->
+
+### Release notes
+
+<!--
+For Feature and Bug Fix PRs:
+ - Describe the user-visible change introduced by this PR.
+ - If the release note is provided by another PR, link that PR under 'Equivalent PRs" above.
+
+Infrastructure PRs:
+ - Do not require release notes.
+-->
+
+<!--
+### Checklist
+
+Feature or Bug Fix PRs:
+- [ ] I have checked whether this is a Breaking API change.
+- [ ] I have provided a release note above or linked the PR containing it.
+- [ ] I have labeled the detectors affected by this PR.
+
+
+Infrastructure PRs:
+- [ ] I have linked any equivalent PRs in a release candidate or developer branch.
+-->