A toy project to see how BLoC can be used to manage a cascading select input flow.
Data is mocked and does not really take in account the id of the selected choice, but it doesn't matter much.
The idea is to have a sequence of chained ChoiceBloc, each one with a specific ChoiceType.
Selecting a choice will reset all the subsequent choices in a cascade fashion.
The chain can be edited by changing the kChoicesSequence array content in app.dart.
