title: Flutter: iOS rich image notification is not working in firebase messaging
body: <p>Using the firebase flutter  <code>firebase_messaging: ^6.0.9</code> with google official documentation almost no solution to get rich ios image notification.</p>
  
  <p>what I have tried: </p>
  
  <p>I found that in react native developers used this </p>
  
  <blockquote>
    <p>using the Extensions Framework you can use the
    CarnivalNotificationServiceExtension class to handle the default
    implementation for you</p>
  </blockquote>
  
  <p>looking for the similar solution in google firebase_messaging</p>
  
  <p>references for the issue:</p>
  
  <p><a href="https://github.com/FirebaseExtended/flutterfire/issues/357" rel="noreferrer">https://github.com/FirebaseExtended/flutterfire/issues/357</a> (long time still unresolved)</p>
  
  <p><a href="https://github.com/MaikuB/flutter_local_notifications/issues/111" rel="noreferrer">https://github.com/MaikuB/flutter_local_notifications/issues/111</a></p>
  
  <p><a href="https://docs.mobile.sailthru.com/docs/ios-rich-push" rel="noreferrer">https://docs.mobile.sailthru.com/docs/ios-rich-push</a></p>