build: install and configure Vite, move index.html

client/src/main.jsx

@@ -0,0 +1,21 @@
+import React from 'react';
+import { createRoot } from 'react-dom/client';
+// import { Provider } from 'react-redux';
+// import { store } from './src/store';
+import { RecoilRoot } from 'recoil';
+
+import { ThemeProvider } from './hooks/ThemeContext';
+import App from './App';
+import './style.css';
+import './mobile.css';
+
+const container = document.getElementById('root');
+const root = createRoot(container);
+
+root.render(
+  <RecoilRoot>
+    <ThemeProvider>
+      <App />
+    </ThemeProvider>
+  </RecoilRoot>
+);