xhj/embeded-gateway: 网关代码

xhj 4d99525703 first commit		6 月之前
..
buffer_view.hpp	4d99525703 first commit	6 月之前
converter_lexical.hpp	4d99525703 first commit	6 月之前
converter_lexical_streams.hpp	4d99525703 first commit	6 月之前
converter_numeric.hpp	4d99525703 first commit	6 月之前
inf_nan.hpp	4d99525703 first commit	6 月之前
is_character.hpp	4d99525703 first commit	6 月之前
lcast_char_constants.hpp	4d99525703 first commit	6 月之前
lcast_unsigned_converters.hpp	4d99525703 first commit	6 月之前
widest_char.hpp	4d99525703 first commit	6 月之前