feat: add github action to add needs testing labels to closed issues (#1678)

.github/workflows/issue_closed.yaml

@@ -0,0 +1,16 @@
+name: Add needs testing labels
+on:
+  issues:
+    types:
+      - closed
+jobs:
+  label_issues:
+    runs-on: ubuntu-latest
+    permissions:
+      issues: write
+    steps:
+      - run: gh issue edit "$NUMBER" --add-label "needs iOS testing"
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GH_REPO: ${{ github.repository }}
+          NUMBER: ${{ github.event.issue.number }}