xhj/embeded-gateway: 网关代码

xhj 4d99525703 first commit		6 月之前
..
detail	4d99525703 first commit	6 月之前
impl	4d99525703 first commit	6 月之前
error.hpp	4d99525703 first commit	6 月之前
fail_count.hpp	4d99525703 first commit	6 月之前
handler.hpp	4d99525703 first commit	6 月之前
immediate_executor.hpp	4d99525703 first commit	6 月之前
stream.hpp	4d99525703 first commit	6 月之前
tcp.hpp	4d99525703 first commit	6 月之前