xhj/embeded-gateway: 网关代码

xhj 4d99525703 first commit		6 月之前
..
astronomical_unit.hpp	4d99525703 first commit	6 月之前
light_day.hpp	4d99525703 first commit	6 月之前
light_hour.hpp	4d99525703 first commit	6 月之前
light_minute.hpp	4d99525703 first commit	6 月之前
light_second.hpp	4d99525703 first commit	6 月之前
light_year.hpp	4d99525703 first commit	6 月之前
parsec.hpp	4d99525703 first commit	6 月之前