xhj/embeded-gateway: 网关代码

xhj 4d99525703 first commit		6 月之前
..
arcminute.hpp	4d99525703 first commit	6 月之前
arcsecond.hpp	4d99525703 first commit	6 月之前
degree.hpp	4d99525703 first commit	6 月之前
gradian.hpp	4d99525703 first commit	6 月之前
radian.hpp	4d99525703 first commit	6 月之前
revolution.hpp	4d99525703 first commit	6 月之前
steradian.hpp	4d99525703 first commit	6 月之前