新增 user 模块

调整新的项目结构，将 service 和 dao 模块，从 application 拆除，独立成 service-impl 模块
增加 sdk 模块，用于提供一个封装过的功能。例如说，认证和授权~

user/user-service-impl/pom.xml

@@ -0,0 +1,51 @@
+<?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>
+        <artifactId>user</artifactId>
+        <groupId>cn.iocoder.mall</groupId>
+        <version>1.0-SNAPSHOT</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>user-service-impl</artifactId>
+    <dependencies>
+        <dependency>
+            <groupId>com.alibaba</groupId>
+            <artifactId>dubbo</artifactId>
+            <version>2.6.5</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>cn.iocoder.mall</groupId>
+            <artifactId>user-service-api</artifactId>
+            <version>1.0-SNAPSHOT</version>
+            <scope>compile</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>mysql</groupId>
+            <artifactId>mysql-connector-java</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-jdbc</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.mybatis.spring.boot</groupId>
+            <artifactId>mybatis-spring-boot-starter</artifactId>
+            <version>2.0.0</version>
+        </dependency>
+        <dependency>
+            <groupId>org.mapstruct</groupId>
+            <artifactId>mapstruct</artifactId>
+            <version>1.3.0.Final</version>
+            <scope>compile</scope>
+        </dependency>
+
+    </dependencies>
+
+
+</project>