xhj/embeded-gateway: 网关代码

xhj 4d99525703 first commit		6 月之前
..
distinct_equal.hpp	4d99525703 first commit	6 月之前
element_equal.hpp	4d99525703 first commit	6 月之前
std_equal.hpp	4d99525703 first commit	6 月之前
sub_super_set.hpp	4d99525703 first commit	6 月之前