xhj/embeded-gateway: 网关代码

xhj 4d99525703 first commit		6 mesi fa
..
detail	4d99525703 first commit	6 mesi fa
limits	4d99525703 first commit	6 mesi fa
elem.hpp	4d99525703 first commit	6 mesi fa
has_opt.hpp	4d99525703 first commit	6 mesi fa
size.hpp	4d99525703 first commit	6 mesi fa
to_array.hpp	4d99525703 first commit	6 mesi fa
to_list.hpp	4d99525703 first commit	6 mesi fa
to_seq.hpp	4d99525703 first commit	6 mesi fa
to_tuple.hpp	4d99525703 first commit	6 mesi fa