Add appmetadata to demo

Author: stevensJourney

demos/supabase-todolist/lib/powersync.dart

@@ -171,7 +171,11 @@ Future<void> openDatabase() async {
     // If the user is already logged in, connect immediately.
     // Otherwise, connect once logged in.
     currentConnector = SupabaseConnector();
-    db.connect(connector: currentConnector, options: options);
+    db.connect(
+        connector: currentConnector,
+        options: SyncOptions(
+            syncImplementation: SyncClientImplementation.rust,
+            appMetadata: {'app_version': '1.0.1'}));
   }
 
   Supabase.instance.client.auth.onAuthStateChange.listen((data) async {