优化 UserSession 的实现，将 id 变成自增，额外增加 token 字段

yudao-module-system/yudao-module-system-biz/src/test/resources/sql/create_tables.sql

@@ -115,7 +115,8 @@ CREATE TABLE IF NOT EXISTS "system_dict_type" (
 ) COMMENT '字典类型表';
 
 CREATE TABLE IF NOT EXISTS `system_user_session` (
-    `id` varchar(32) NOT NULL,
+    "id" bigint NOT NULL GENERATED BY DEFAULT AS IDENTITY,
+    `token` varchar(32) NOT NULL,
     `user_id` bigint DEFAULT NULL,
     "user_type" tinyint NOT NULL,
     `username` varchar(50) NOT NULL DEFAULT '',