android constant Null safety

FirebaseOptions const android

Implementation

static const FirebaseOptions android = FirebaseOptions(
  apiKey: 'AIzaSyB6wRzqEYJza87DqVboCIcgvtn5IefNLAs',
  appId: '1:319330223109:android:bf2588b8aafe87444c886c',
  messagingSenderId: '319330223109',
  projectId: 'fir-auth-example-65a30',
  storageBucket: 'fir-auth-example-65a30.appspot.com',
);