Temp: Automatically label PRs with "port to doc6"

.github/workflows/auto-label-doc6.yml

@@ -0,0 +1,23 @@
+name: Auto Label PRs
+on:
+  pull_request:
+    types:
+      - opened
+
+jobs:
+  auto-label:
+    runs-on: ubuntu-latest
+    permissions:
+      pull-requests: write
+
+    steps:
+      - name: Add label to PR
+        uses: actions/github-script@v7
+        with:
+          script: |
+            await github.rest.issues.addLabels({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              labels: ['temp: port to doc6']
+            });