feat(App): update Finlytic Flutter app UI and blocs

FinlyticApp/lib/features/favorites/bloc/favorites_event.dart

@@ -0,0 +1,17 @@
+import 'package:equatable/equatable.dart';
+
+abstract class FavoritesEvent extends Equatable {
+  const FavoritesEvent();
+
+  @override
+  List<Object?> get props => [];
+}
+
+class LoadFavorites extends FavoritesEvent {
+  final List<String> symbols;
+
+  const LoadFavorites(this.symbols);
+
+  @override
+  List<Object?> get props => [symbols];
+}