活动：首充添加一个给客户端的字段

shared/domain/activityField/firstGiftField.ts

@@ -9,6 +9,7 @@ export class FirstGiftItem {
     index: number;          // 第几天，从1开始
     name: string;            //名称
     reward: string;           //奖励
+    goldCount: number;        // 显示用的可获得元宝
 
     isReceive: boolean = false;          //是否领取过奖励
 
@@ -16,6 +17,7 @@ export class FirstGiftItem {
         this.name = data.name;
         this.index = data.index;
         this.reward = data.reward;
+        this.goldCount = data.goldCount;
     }
 }