商城：增加 stat 统计设计

yudao-module-mall/yudao-module-statistics-api/pom.xml

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <parent>
+        <groupId>cn.iocoder.boot</groupId>
+        <artifactId>yudao-module-mall</artifactId>
+        <version>${revision}</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>yudao-module-statistics-api</artifactId>
+    <packaging>jar</packaging>
+
+    <name>${project.artifactId}</name>
+    <description>
+        statistics 模块 API，暴露给其它模块调用
+    </description>
+
+    <dependencies>
+        <dependency>
+            <groupId>cn.iocoder.boot</groupId>
+            <artifactId>yudao-common</artifactId>
+        </dependency>
+
+        <!-- 参数校验 -->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-validation</artifactId>
+            <optional>true</optional>
+        </dependency>
+    </dependencies>
+
+</project>

yudao-module-mall/yudao-module-statistics-api/src/main/java/cn/iocoder/yudao/module/statistics/api/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * TODO 占位，无特殊含义
+ */
+package cn.iocoder.yudao.module.statistics.api;

yudao-module-mall/yudao-module-statistics-api/src/main/java/cn/iocoder/yudao/module/statistics/enums/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * TODO 占位，无特殊含义
+ */
+package cn.iocoder.yudao.module.statistics.enums;