add all devices fetch

lib/features/scene/bloc/create_scene/create_scene_bloc.dart

@@ -0,0 +1,13 @@
+import 'package:bloc/bloc.dart';
+import 'package:equatable/equatable.dart';
+
+part 'create_scene_event.dart';
+part 'create_scene_state.dart';
+
+class CreateSceneBloc extends Bloc<CreateSceneEvent, CreateSceneState> {
+  CreateSceneBloc() : super(CreateSceneInitial()) {
+    on<CreateSceneEvent>((event, emit) {
+      // TODO: implement event handler
+    });
+  }
+}

lib/features/scene/bloc/create_scene/create_scene_event.dart

@@ -0,0 +1,8 @@
+part of 'create_scene_bloc.dart';
+
+sealed class CreateSceneEvent extends Equatable {
+  const CreateSceneEvent();
+
+  @override
+  List<Object> get props => [];
+}

lib/features/scene/bloc/create_scene/create_scene_state.dart

@@ -1 +1,10 @@
+part of 'create_scene_bloc.dart';
 
+sealed class CreateSceneState extends Equatable {
+  const CreateSceneState();
+  
+  @override
+  List<Object> get props => [];
+}
+
+final class CreateSceneInitial extends CreateSceneState {}