Add workflow to add internal label on PR for later filtering in relea…

.github/workflows/pr-labeler-internal.yml

@@ -0,0 +1,33 @@
+name: Append INTERNAL-COMMIT to PR title
+
+on:
+  pull_request:
+    types: [labeled]
+
+env:
+  append-string: "INTERNAL-COMMIT"
+
+jobs:
+  append-string-to-title:
+    runs-on: ubuntu-latest
+    if: github.event.label.name == 'internal'
+    steps:
+      - name: Append ${{ env.append-string }} to PR title
+        uses: actions/github-script@v7
+        with:
+          github-token: ${{secrets.GITHUB_TOKEN}}
+          script: |
+            const { pull_request } = context.payload;
+            const newTitle = `${pull_request.title} ${{ env.append-string }}`;
+
+            if (!pull_request.title.includes("${{ env.append-string }}")) {
+              const response = await github.rest.pulls.update({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                pull_number: pull_request.number,
+                title: newTitle,
+              });
+              core.info("PR title updated to " + response.data.title);
+            } else {
+              core.info("PR title already contains ${{ env.append-string }}");
+            }