generic src for react admin

src_generic/main.tsx

@@ -0,0 +1,12 @@
+import * as React from 'react';
+import { createRoot } from 'react-dom/client';
+import App from './App';
+
+const rootElement = document.getElementById('root');
+const root = createRoot(rootElement!);
+
+root.render(
+  <React.StrictMode>
+    <App />
+  </React.StrictMode>
+);