Add initial iOS project files for iso-test-app

- Created Info.plist with essential app configuration including bundle identifiers, versioning, and URL schemes.
- Added PrivacyInfo.xcprivacy to specify accessed API types and privacy tracking settings.
- Implemented SplashScreen.storyboard for the app's launch screen with a logo and background color.
- Established Expo.plist for update configurations, setting updates to check on launch.
- Created a bridging header for Swift compatibility.
- Added an empty entitlements file for future use.

app/+not-found.tsx

@@ -0,0 +1,39 @@
+import { Link, Stack } from 'expo-router';
+import React from 'react';
+import { StyleSheet, Text, View } from 'react-native';
+
+export default function NotFoundScreen() {
+  return (
+    <>
+      <Stack.Screen options={{ title: 'Oops!' }} />
+      <View style={styles.container}>
+        <Text style={styles.title}>This screen does not exist.</Text>
+        <Link href="/" style={styles.link}>
+          <Text style={styles.linkText}>Go to home screen!</Text>
+        </Link>
+      </View>
+    </>
+  );
+}
+
+const styles = StyleSheet.create({
+  container: {
+    flex: 1,
+    alignItems: 'center',
+    justifyContent: 'center',
+    padding: 20,
+  },
+  title: {
+    fontSize: 20,
+    fontWeight: 'bold',
+    marginBottom: 10,
+  },
+  link: {
+    marginTop: 15,
+    paddingVertical: 15,
+  },
+  linkText: {
+    color: '#007AFF',
+    textDecorationLine: 'underline',
+  },
+});

app/index.tsx

@@ -1,7 +1,38 @@
-import React from "react";
-import { Text, View } from "react-native";
+import * as Notifications from 'expo-notifications';
+import React, { useEffect } from "react";
+import { Button, Platform, Text, View } from "react-native";
+
+async function registerForPushNotificationsAsync() {
+  const { status: existingStatus } = await Notifications.getPermissionsAsync();
+  let finalStatus = existingStatus;
+  if (existingStatus !== 'granted') {
+    const { status } = await Notifications.requestPermissionsAsync();
+    finalStatus = status;
+  }
+  if (finalStatus !== 'granted') {
+    alert('Permission for notifications not granted!');
+    return false;
+  }
+  return true;
+}
+
+async function sendNotification() {
+  await Notifications.scheduleNotificationAsync({
+    content: {
+      title: "Hello!",
+      body: "Ez egy értesítés példája.",
+    },
+    trigger: Platform.OS === 'android'
+      ? ({ seconds: 1, repeats: false } as any)
+      : null,
+  });
+}
 
 export default function Index() {
+  useEffect(() => {
+    registerForPushNotificationsAsync();
+  }, []);
+
   return (
     <View
       style={{
@@ -11,6 +42,7 @@ export default function Index() {
       }}
     >
       <Text>Edit app/index.tsx to edit this screen.</Text>
+      <Button title="Küldj értesítést" onPress={sendNotification} />
     </View>
   );
 }