AjwahStore constructor
Implementation
AjwahStore() {
_dispatcher = BehaviorSubject<Action>.seeded(Action(type: '@@INIT'));
_store = BehaviorSubject<Map<String, dynamic>>.seeded({});
_actions = Actions(_dispatcher);
_stateSubscriptions = Map<String, StreamSubscription<Action>>();
_effectSubscriptions = Map<String, StreamSubscription<Action>>();
}