add cleam-caches.yml

.github/workflows/clean-caches.yml

@@ -0,0 +1,22 @@
+name: Clean caches
+
+on:
+  pull_request:
+    types:
+      - closed
+  workflow_dispatch:
+    inputs:
+      ref:
+        description: Clean caches for this branch name or ref
+        required: false
+        type: string
+
+jobs:
+  cleanup:
+    name: Remove caches
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: ComPWA/actions/clean-caches@v1
+        with:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          ref: ${{ inputs.ref }}