feat: update ui

frontend/app/auth/login.tsx

@@ -0,0 +1,14 @@
+import { View, Text, Button } from "tamagui";
+import React from "react";
+import authStore from "@/stores/auth";
+
+export default function LoginPage() {
+  return (
+    <View>
+      <Text>LoginPage</Text>
+      <Button onPress={() => authStore.setState({ token: "123" })}>
+        Login
+      </Button>
+    </View>
+  );
+}