added initial components and routing

src/index.js

@@ -1,5 +1,13 @@
 import React from 'react';
-import ReactDOM from 'react-dom';
+import ReactDOM from 'react-dom/client';
 import App from './App';
+import { BrowserRouter } from 'react-router-dom';
 
-ReactDOM.render(<App />, document.getElementById('root'));
+const root = ReactDOM.createRoot(document.getElementById('root'));
+root.render(
+  <React.StrictMode>
+    <BrowserRouter>
+      <App />
+    </BrowserRouter>
+  </React.StrictMode>
+);