Add push sync to opencode gitlab

.github/workflows/opencode-sync.yml

@@ -0,0 +1,21 @@
+name: opencode-sync
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: '5 */1 * * *' # Every hour
+
+permissions:
+  contents: read # to fetch code (actions/checkout)
+jobs:
+  to_gitlab:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - uses: pixta-dev/repository-mirroring-action@v1
+        with:
+          target_repo_url:
+            git@gitlab.opencode.de:bmi/souveraener_arbeitsplatz/component-code/management/openproject/openproject-core.git
+          ssh_private_key:
+            ${{ secrets.OPENCODE_SYNC_SSH_PRIVATE_KEY }}