add: 用户鉴权和查询所有用户接口

sql/init_mock_data.sql

@@ -0,0 +1,9 @@
+-- insert normal user
+insert into user(id, name, passwd, create_time, update_time) 
+values
+("01", "XiaoAi", "abcd", "2026-01-01", "2026-01-01"),
+("02", "XiaoMing", "abce", "2026-01-02", "2026-01-02"),
+("03", "CancerAi", "abcf", "2026-01-02", "2026-01-02");
+
+-- insert admin user
+insert into admin(name, passwd) values ("admin", "admin");