chore: basic layout

src/routes/login.tsx

@@ -0,0 +1,13 @@
+import { createFileRoute } from '@tanstack/react-router';
+
+export const Route = createFileRoute('/login')({
+  component: LoginPage,
+});
+
+function LoginPage() {
+  return (
+    <div style={{ padding: '50px', textAlign: 'center' }}>
+      <h1>登录页面</h1>
+    </div>
+  );
+}