xhj/embeded-gateway: 网关代码

xhj 4d99525703 first commit		6 月之前
..
detail	4d99525703 first commit	6 月之前
limits	4d99525703 first commit	6 月之前
deduce_d.hpp	4d99525703 first commit	6 月之前
expr_if.hpp	4d99525703 first commit	6 月之前
expr_iif.hpp	4d99525703 first commit	6 月之前
if.hpp	4d99525703 first commit	6 月之前
iif.hpp	4d99525703 first commit	6 月之前
while.hpp	4d99525703 first commit	6 月之前