feat: added execution of db.version()

Author: limcheekin

example/lib/main.dart

@@ -95,6 +95,11 @@ class _HomePageState extends State<HomePage> {
       'db.connect()',
     );
 
+    await execute(
+      () => db.version(),
+      'db.version',
+    );
+
     await execute(
       () => db.use(namespace: 'surreal', database: 'surreal'),
       'db.use()',