Add a GH action to label issues and PRs when they get deployed

Signed-off-by: Aurélien Bompard <[email protected]>

.github/workflows/label-when-deployed.yaml

@@ -0,0 +1,30 @@
+# SPDX-FileCopyrightText: Contributors to the Fedora Project
+#
+# SPDX-License-Identifier: MIT
+
+name: Apply labels when deployed
+
+on:
+  push:
+    branches:
+      - staging
+      - stable
+
+jobs:
+  label:
+    name: Apply labels
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Staging deployment
+        uses: fedora-infra/label-when-in-branch@v1
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          branch: staging
+          label: deployed:staging
+      - name: Production deployment
+        uses: fedora-infra/label-when-in-branch@v1
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          branch: stable
+          label: deployed:prod