init method
Initializes the platform interface and disposes all existing players.
This method is called when the plugin is first initialized and on every full restart.
Implementation
@override
Future<void> init() async {
final instance =
AudioplayersPlatformInterface.instance as WebAudioplayersPlatform;
await Future.wait(
instance.players.values.map((player) => player.dispose()),
);
instance.players.clear();
}