Reorganize web folder structurally

client-web/src/main.tsx

@@ -0,0 +1,20 @@
+import React from 'react';
+import ReactDOM from 'react-dom/client';
+import { QueryClient, QueryClientProvider } from '@tanstack/react-query';
+import App from './App';
+import './index.css';
+
+const queryClient = new QueryClient({
+  defaultOptions: {
+    queries: {
+      retry: 1,
+      refetchOnWindowFocus: false,
+    },
+  },
+});
+
+ReactDOM.createRoot(document.getElementById('root')!).render(
+  <QueryClientProvider client={queryClient}>
+    <App />
+  </QueryClientProvider>
+);