fix 订餐返回当前信息,增加数量入参和响应

Src/Dlhis.Canteen/Order/Request/BookingMealRequest.cs

@@ -30,6 +30,12 @@ public class BookingMealRequest : IValidatableObject
     [Required(ErrorMessage = "选菜不能为空")]
     public string DishesCode { get; set; }
 
+    /// <summary>
+    /// 购买数量
+    /// </summary>
+    [Range(0, 100)]
+    public int Number { get; set; }
+
     /// <summary>
     /// 消费来源
     /// </summary>