xhj/embeded-gateway: 网关代码

xhj 4d99525703 first commit		vor 6 Monaten
..
detail	4d99525703 first commit	vor 6 Monaten
arithmetic.hpp	4d99525703 first commit	vor 6 Monaten
buffers.hpp	4d99525703 first commit	vor 6 Monaten
conversion.hpp	4d99525703 first commit	vor 6 Monaten
endian.hpp	4d99525703 first commit	vor 6 Monaten