xhj/embeded-gateway: 网关代码

xhj 4d99525703 first commit		6 月之前
..
bit.hpp	4d99525703 first commit	6 月之前
byte.hpp	4d99525703 first commit	6 月之前
hartley.hpp	4d99525703 first commit	6 月之前
nat.hpp	4d99525703 first commit	6 月之前
prefixes.hpp	4d99525703 first commit	6 月之前
shannon.hpp	4d99525703 first commit	6 月之前