调整product服务项目结构，商品规格列表接口

product/product-biz/src/main/resources/biz.properties

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+##################### 业务模块 #####################
+

product/product-biz/src/main/resources/biz.yaml

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+spring:
+  # 数据源配置项
+  datasource:
+    url: jdbc:mysql://s1.iocoder.cn:3306/mall_product?useSSL=false&useUnicode=true&characterEncoding=UTF-8
+    driver-class-name: com.mysql.jdbc.Driver
+    username: root
+    password: 3WLiVUBEwTbvAfsh
+
+# MyBatis Plus 配置项
+mybatis-plus:
+  configuration:
+    map-underscore-to-camel-case: true # 虽然默认为 true ，但是还是显示去指定下。
+  global-config:
+    db-config:
+      id-type: auto
+      logic-delete-value: 1 # 逻辑已删除值(默认为 1)
+      logic-not-delete-value: 0 # 逻辑未删除值(默认为 0)
+  mapper-locations: classpath*:mapper/*.xml
+  type-aliases-package: cn.iocoder.mall.product.biz.dataobject

product/product-biz/src/main/resources/mapper/ProductSpuMapper.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="cn.iocoder.mall.product.biz.dao.product.ProductSpuMapper">
+
+
+</mapper>