run method
Implementation
Future<PageModel> run() async {
var android = await androidImage();
var iphone = await iphoneImage();
var tablet = await tabletImage();
var macbook = await macbookImage();
var appBar = installApp!.appBar();
await _setupWelcome();
await _setupFader(android, iphone, tablet, macbook);
return await _setupPage(appBar);
}