Add router and login part

src/index.tsx

@@ -1,12 +1,7 @@
 import React from 'react';
 import ReactDOM from 'react-dom';
-import './index.css';
+import './index.css';
+import { BrowserRouter as Router } from 'react-router-dom';
 import App from './Components/AppComponent/App';
-import * as serviceWorker from './serviceWorker';
 
-ReactDOM.render(<App />, document.getElementById('root'));
-
-// If you want your app to work offline and load faster, you can change
-// unregister() to register() below. Note this comes with some pitfalls.
-// Learn more about service workers: https://bit.ly/CRA-PWA
-serviceWorker.unregister();
+ReactDOM.render(<Router><App /></Router>, document.getElementById('App'));