移植后台关灯机制 超时退出模式关灯，灯状态不对的恢复

WCS.BLL/DbModels/ShelfInfo.cs

@@ -42,6 +42,12 @@ namespace WCS.DAL.DbModels
         [SugarColumn(ColumnName = "current_mode", IsNullable = false, ColumnDescription = "货架当前状态")]
         public Mode CurrentMode { get; set; }
 
+        /// <summary>
+        /// 货架设置当前模式的时间
+        /// </summary>
+        [SugarColumn(ColumnName = "set_current_mode_time", IsNullable = true, ColumnDescription = "设置货架当前模式的时间")]
+        public DateTime SetCurrentModeTime { get; set; }
+
         /// <summary>
         /// 货架行数
         /// </summary>