feat(workflows): add cleanup job for old images versions

.github/workflows/cleanup-images.yml

@@ -0,0 +1,24 @@
+---
+name: Cleanup old container images versions
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: '00 4 * * 6' # Every Saturday at 04:00am
+jobs:
+  cleanup:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    strategy:
+      matrix:
+        package: ['adguard-home','ferretdb','navidrome','pgbouncer','postgresql','valkey','watchtower']
+    steps:
+      - uses: actions/delete-package-versions@v5
+        with:
+          owner: github
+          package-name: ${{ matrix.package }}
+          package-type: container
+          token: ${{ secrets.GITHUB_TOKEN }}
+          min-versions-to-keep: 5
+          delete-only-untagged-versions: true