feat(wms): 添加钢卷与合同关联关系管理功能

- 创建 WmsCoilContractRel 实体类定义钢卷与合同关联关系数据结构
- 实现 IWmsCoilContractRelService 接口提供基础CRUD操作方法
- 开发 WmsCoilContractRelServiceImpl 业务逻辑实现类
- 添加 WmsCoilContractRelController 控制器支持RESTful API接口
- 设计 WmsCoilContractRelMapper 数据访问接口及XML映射文件
- 创建 WmsCoilContractRelBo 业务对象和 WmsCoilContractRelVo 视图对象
- 集成分页查询、新增、修改、删除和导出功能
- 添加数据验证和重复提交防护机制

klp-wms/src/main/java/com/klp/mapper/WmsCoilContractRelMapper.java

@@ -0,0 +1,15 @@
+package com.klp.mapper;
+
+import com.klp.domain.WmsCoilContractRel;
+import com.klp.domain.vo.WmsCoilContractRelVo;
+import com.klp.common.core.mapper.BaseMapperPlus;
+
+/**
+ * 钢卷与合同关联关系Mapper接口
+ *
+ * @author klp
+ * @date 2026-04-18
+ */
+public interface WmsCoilContractRelMapper extends BaseMapperPlus<WmsCoilContractRelMapper, WmsCoilContractRel, WmsCoilContractRelVo> {
+
+}