Support for GoRouter and MaterialApp.router

[falzfalzfalz]

Is your feature request related to a problem? Please describe.
Can this package play nice with GoRouter and MaterialApp.router instead of MaterialApp ?

Describe the solution you'd like
I'd like to be able to use this package to use my rive animation as splash screen, and configure it using GoRouter app router.

// main.dart
 @override
  Widget build(BuildContext context, WidgetRef ref) {
    final router = ref.watch(goRouterProvider);
...
    return MaterialApp.router(
        routerConfig: router,
...
}

**Describe alternatives you've considered**
Tried other packages, didn't work either.