introduce a running login chain

src/components/overview.tsx

@@ -0,0 +1,14 @@
+import React, { useState } from 'react';
+import axios from 'axios';
+
+export const Overview: React.FC = () => {
+  const [msg, setMsg] = useState('LOADING');
+
+  axios.get('http://localhost:3000/auth/user', {
+    headers: {
+      Authorization: `Bearer ${sessionStorage.getItem('token')}`,
+    },
+  }).then((data) => setMsg(data.data)).catch(() => setMsg('FAILED'));
+
+  return <>OVERVIEW {msg}</>;
+};