xhj/embeded-gateway: 网关代码

xhj 4d99525703 first commit		6 月之前
..
detail	4d99525703 first commit	6 月之前
basic_endpoint.hpp	4d99525703 first commit	6 月之前
datagram_protocol.hpp	4d99525703 first commit	6 月之前
raw_protocol.hpp	4d99525703 first commit	6 月之前
seq_packet_protocol.hpp	4d99525703 first commit	6 月之前
stream_protocol.hpp	4d99525703 first commit	6 月之前