新增：新增功能权限适配及校验

1.后端 API 注解鉴权使用方式：@SaCheckPermission("system:user:add")
2.前端全局指令函数使用方式：v-permission="['system:user:add']"
3.前端权限判断函数使用方式：checkPermission(['system:user:add'])

continew-admin-ui/src/views/monitor/online/index.vue

@@ -70,7 +70,7 @@
             <template #cell="{ record }">
               <a-popconfirm content="确定要强退该用户吗？" type="warning" @ok="handleKickout(record.token)">
                 <a-button
-                  v-permission="['admin']"
+                  v-permission="['monitor:online:user:delete']"
                   type="text"
                   size="small"
                   :disabled="currentToken === record.token"