Create refactor template

.github/ISSUE_TEMPLATE/sweep-refactor.yml

+name: Refactor
+title: 'Sweep: '
+description: Write something like "Modify the ... api endpoint to use ... version and ... framework"
+labels: sweep
+body:
+  - type: textarea
+    id: description
+    attributes:
+      label: Details
+      description: More details for Sweep
+      placeholder: We are migrating this function to ... version because ...
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