xhj/embeded-gateway: 网关代码

xhj 4d99525703 first commit		6 mesi fa
..
count.hpp	4d99525703 first commit	6 mesi fa
fraction.hpp	4d99525703 first commit	6 mesi fa
is_thread_safe.hpp	4d99525703 first commit	6 mesi fa
mean.hpp	4d99525703 first commit	6 mesi fa
ostream.hpp	4d99525703 first commit	6 mesi fa
sum.hpp	4d99525703 first commit	6 mesi fa
weighted_mean.hpp	4d99525703 first commit	6 mesi fa
weighted_sum.hpp	4d99525703 first commit	6 mesi fa