chore: workflow to clean pr after merging (#2239)

Author: Qazalbash

.github/workflows/pr-cleanup.yml

@@ -0,0 +1,24 @@
+name: PR Cleanup
+on:
+  pull_request:
+    types: [closed]
+permissions:
+  contents: read
+  pull-requests: write
+jobs:
+  cleanup:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Remove awaiting review label
+        uses: actions/github-script@v9
+        with:
+          script: |
+            const labels = context.payload.pull_request.labels.map((label) => label.name);
+            if (labels.includes("awaiting review")) {
+              await github.rest.issues.removeLabel({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                issue_number: context.payload.pull_request.number,
+                name: "awaiting review",
+              });
+            }