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/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>
   );
 }