feat: add core entities, controllers, services, and mappers across multi-module project

admin/target/classes/mapper/YnzkSystemDeviceMapper.xml

@@ -0,0 +1,5 @@
+<?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.unizk.mapper.YnzkSystemDeviceMapper">
+
+</mapper>