adding in main electron app with react

packages/desktop/src/app.tsx

@@ -0,0 +1,11 @@
+import * as React from 'react';
+
+import ReactDOM from "react-dom/client";
+
+const root = ReactDOM.createRoot(document.body as HTMLElement);
+
+root.render(
+    <React.StrictMode>
+      hello from react
+    </React.StrictMode>
+  );