feat: 支持第三方账号登录

Just Auth（开箱即用的整合第三方登录的开源组件，脱离繁琐的第三方登录 SDK，让登录变得 So easy!）

continew-admin-system/src/main/resources/mapper/UserSocialMapper.xml

@@ -0,0 +1,11 @@
+<?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="top.charles7c.cnadmin.system.mapper.UserSocialMapper">
+    <select id="selectBySourceAndOpenId"
+            resultType="top.charles7c.cnadmin.system.model.entity.UserSocialDO">
+        SELECT t1.*
+        FROM `sys_user_social` AS t1
+            LEFT JOIN `sys_user` AS t2 ON t2.`id` = t1.`user_id`
+        WHERE t1.`source` = #{source} AND t1.`open_id` = #{openId}
+    </select>
+</mapper>