Add workflow to trigger alert on failed test (#183741)

.github/workflows/alert-failed-test.yml

@@ -0,0 +1,28 @@
+on:
+  issue_comment:
+    types: [created]
+
+jobs:
+  issue_alert:
+    name: Alert on failed test
+    if: |
+      !github.event.issue.pull_request
+      && github.event.comment.user.login == 'kibanamachine'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout kibana-operations
+        uses: actions/checkout@v4
+        with:
+          repository: 'elastic/kibana-operations'
+          ref: main
+          path: ./kibana-operations
+          token: ${{secrets.KIBANAMACHINE_TOKEN}}
+
+      - name: Label failed test issue
+        working-directory: ./kibana-operations/triage
+        env:
+          GITHUB_TOKEN: ${{secrets.KIBANAMACHINE_TOKEN}}
+          SLACK_TOKEN: ${{secrets.SLACK_TOKEN_FAILED_TEST_NOTIFIER}}
+        run: |
+          npm ci --omit=dev
+          node failed-test-alert ${{github.event.issue.number}} || true