chore: add nimbus auto sync (#39182)

* chore: add nimbus auto sync

* trigger on branch for testing

* remove client payload

* try v4

* run only on master

.github/workflows/trigger-nimbus-sync.yml

@@ -0,0 +1,17 @@
+name: Trigger Nimbus Sync
+
+on:
+  push:
+    branches: [master]
+  workflow_dispatch: # Allow manual triggering
+
+jobs:
+  trigger-nimbus-sync:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Trigger sync in supabase-nimbus
+        uses: peter-evans/repository-dispatch@v4
+        with:
+          token: ${{ secrets.NIMBUS_SYNC_TOKEN }}
+          repository: supabase/supabase-nimbus
+          event-type: sync_from_upstream