feat: refactor code

lib/feature/shop/presentation/bloc/shop_event.dart

@@ -0,0 +1,21 @@
+abstract class ShopEvent {}
+
+class LoadShopEvent extends ShopEvent {}
+
+class BuyCardEvent extends ShopEvent {
+  final String cardId;
+  BuyCardEvent(this.cardId);
+}
+
+class SelectCardEvent extends ShopEvent {
+  final String cardId;
+  SelectCardEvent(this.cardId);
+}
+
+class PurchaseEvent extends ShopEvent {
+  final String kind;
+  final String productId;
+  PurchaseEvent(this.kind, this.productId);
+}
+
+class AdRewardEvent extends ShopEvent {}