【新增】新增全局优惠展示接口，前端商品详情增加全局优惠显示入口。

CoreCms.Net.IServices/Promotion/ICoreCmsPromotionServices.cs

@@ -90,5 +90,12 @@ namespace CoreCms.Net.IServices
         /// <param name="promotionId"></param>
         /// <returns></returns>
         Task<WebApiCallBack> ReceiveCoupon(int promotionId);
+
+        /// <summary>
+        /// 获取全局促销列表
+        /// </summary>
+        /// <returns></returns>
+        Task<List<GetPromotionResult>> GetPromotionList(int type = (int)GlobalEnumVars.PromotionType.Promotion);
+
     }
 }