xhj/embeded-gateway: 网关代码

xhj 4d99525703 first commit		6 月之前
..
call_std	4d99525703 first commit	6 月之前
cpp_future.hpp	4d99525703 first commit	6 月之前
detected.hpp	4d99525703 first commit	6 月之前
identity_tag.hpp	4d99525703 first commit	6 月之前
is_sax.hpp	4d99525703 first commit	6 月之前
std_fs.hpp	4d99525703 first commit	6 月之前
type_traits.hpp	4d99525703 first commit	6 月之前
void_t.hpp	4d99525703 first commit	6 月之前