feat(WmsPurchasePlan): 添加附件信息字段

- 在 WmsPurchasePlan、WmsPurchasePlanBo 和 WmsPurchasePlanVo 类中添加 attachmentInfo 字段
- 在 WmsPurchasePlanMapper.xml 中添加 attachmentInfo 字段的映射
- 用于存储和展示采购计划的附件信息

klp-wms/src/main/resources/mapper/klp/WmsPurchasePlanMapper.xml

@@ -10,6 +10,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         <result property="owner" column="owner"/>
         <result property="orderId" column="order_id"/>
         <result property="status" column="status"/>
+        <result property="attachmentInfo" column="attachment_info"/>
         <result property="remark" column="remark"/>
         <result property="delFlag" column="del_flag"/>
         <result property="createTime" column="create_time"/>