xhj/embeded-gateway: 网关代码

xhj 4d99525703 first commit		6 月之前
..
internal_iterator.hpp	4d99525703 first commit	6 月之前
iter_impl.hpp	4d99525703 first commit	6 月之前
iteration_proxy.hpp	4d99525703 first commit	6 月之前
iterator_traits.hpp	4d99525703 first commit	6 月之前
json_reverse_iterator.hpp	4d99525703 first commit	6 月之前
primitive_iterator.hpp	4d99525703 first commit	6 月之前