ci: mirroring on different git instance

Signed-off-by: Vincenzo Palazzo <[email protected]>

.github/workflows/mirroring.yml

@@ -0,0 +1,21 @@
+name: Git Mirroring
+
+on:
+  push:
+    branches: [main]
+  delete:
+    branches: [main]
+
+jobs:
+  to_codeberg:
+    runs-on: ubuntu-latest
+    steps:                                              # <-- must use actions/checkout before mirroring!
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - uses: pixta-dev/repository-mirroring-action@v1
+        with:
+          target_repo_url:
+            ssh://[email protected]:222/dev-crew/lampo.rs.git
+          ssh_private_key:                              # <-- use 'secrets' to pass credential information.
+            ${{ secrets.SSH_PRIVATE_KEY }}