feat: add client and cdr interface

sql/wfc_user_db/wfc_user_db.sql

@@ -63,6 +63,7 @@ CREATE TABLE `u_cdr`  (
   `rate_limit_profile_id` varchar(16) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NULL DEFAULT NULL COMMENT 'Rate limit profile ID. ',
   `up_time` bigint(20) NULL DEFAULT NULL COMMENT 'Up time (unit: s).',
   `last_seen_time` bigint(20) NULL DEFAULT NULL COMMENT 'Last found time, timestamp (ms).	',
+  `activity` bigint(20) DEFAULT NULL COMMENT 'Activity download speed (Bytes/s)',
   `del_flag` char(1) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NULL DEFAULT '0' COMMENT 'delete flag',
   `create_by` bigint(20) NULL DEFAULT NULL COMMENT 'creater',
   `create_time` datetime NULL DEFAULT NULL COMMENT 'create time',