feat(MemberCoupon): 添加 remark 字段

src/main/java/com/xynet/marketing/entity/MemberCoupon.java

@@ -68,4 +68,6 @@ public class MemberCoupon implements Serializable {
     private LocalDate createDate;
 
     private String createOrderId;
+
+    private String remark;
 }