chore(ci): add ready label workflow (#9599)

Author: hntrl

.github/workflows/pr-approval-label.yml

@@ -0,0 +1,27 @@
+name: "PR Approval Label"
+
+on:
+  pull_request_review:
+    types: [submitted]
+
+permissions:
+  contents: read
+  pull-requests: write
+
+jobs:
+  add-ready-label:
+    runs-on: ubuntu-latest
+    # Only run when an org member approves
+    if: github.event.review.state == 'approved' && github.event.review.author_association == 'MEMBER'
+    steps:
+      - name: Add ready label
+        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            await github.rest.issues.addLabels({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.payload.pull_request.number,
+              labels: ['ready']
+            });