Implement basic structure

src/pages/About.tsx

@@ -0,0 +1,5 @@
+import { Fragment, type ReactElement } from 'react';
+
+export function About(): ReactElement {
+    return <Fragment>Hello, About.</Fragment>;
+}

src/pages/Home.tsx

@@ -0,0 +1,11 @@
+import React, { type ReactElement } from 'react';
+import { Card, CardContent, CardHeader } from '@mui/material';
+
+export function Home(): ReactElement {
+    return (
+        <Card>
+            <CardHeader title='Home'></CardHeader>
+            <CardContent>Hello, others</CardContent>
+        </Card>
+    );
+}