Merge #2063 into sdk602patch0911 from refs/changes/2063/head

Code review from snickersun@163.com

* refs/changes/2063/head: (5 commits)
  tcp_simple_manager添加dnscache功能
  恢复cat1_ws. 原始代码，为移植tcp_sample_manager接口做准备。
  中间版本，ai_server,cat1_ws, tcp_simple_manager 都已经添加好，ws还有问题
  可以开始调试了
  ai对话可以运行，但还不能上传数据

Signed-off-by: snickersun@163.com <accounts_62b90f7fcf51ade33b6f628e@mail.teambition.com>
Reviewed-by: Caisking <3449750381@qq.com>
Reviewed-by: 罗正 <1732036298@qq.com>
Reviewed-by: aliyun8003852482 <1224667075@qq.com>
Reviewed-by: snickersun@163.com <accounts_62b90f7fcf51ade33b6f628e@mail.teambition.com>
Reviewed-by: aliyun6865282430 <1624952103@qq.com>
Merged-by: aliyun8003852482 <1224667075@qq.com>
link: https://codeup.aliyun.com/64191456b9581d62e8f81ac0/FD230/change/2063