feat: implement browser extension UI with WebAssembly integration

extension/popup/index.jsx

@@ -0,0 +1,8 @@
+import React from 'react';
+import { createRoot } from 'react-dom/client';
+import App from './App';
+import './style.css';
+
+// Render the React app
+const root = createRoot(document.getElementById('root'));
+root.render(<App />);