add unistyles

apps/cli/templates/frontend/native/unistyles/app/+not-found.tsx

@@ -0,0 +1,34 @@
+import { Link, Stack } from "expo-router";
+import { Text } from "react-native";
+import { StyleSheet } from "react-native-unistyles";
+
+import { Container } from "@/components/container";
+
+export default function NotFoundScreen() {
+  return (
+    <>
+      <Stack.Screen options={{ title: "Oops!" }} />
+      <Container>
+        <Text style={styles.title}>This screen doesn't exist.</Text>
+        <Link href="/" style={styles.link}>
+          <Text style={styles.linkText}>Go to home screen!</Text>
+        </Link>
+      </Container>
+    </>
+  );
+}
+
+const styles = StyleSheet.create((theme) => ({
+  title: {
+    fontSize: 20,
+    fontWeight: "bold",
+    color: theme.colors.typography,
+  },
+  link: {
+    marginTop: 16,
+    paddingVertical: 16,
+  },
+  linkText: {
+    fontSize: 14,
+  },
+}));