add initial frontend

frontend/src/main.tsx

@@ -0,0 +1,15 @@
+import { StrictMode } from 'react'
+import { createRoot } from 'react-dom/client'
+import {QueryClient, QueryClientProvider} from '@tanstack/react-query'
+import './index.css'
+import App from './App.tsx'
+
+const queryClient = new QueryClient();
+
+createRoot(document.getElementById('root')!).render(
+  <StrictMode>
+    <QueryClientProvider client={queryClient}>
+      <App />
+    </QueryClientProvider>
+  </StrictMode>,
+)