xhj/embeded-gateway: 网关代码

xhj 4d99525703 first commit		6 月之前
..
arithmetic.hpp	4d99525703 first commit	6 月之前
cross_product.hpp	4d99525703 first commit	6 月之前
determinant.hpp	4d99525703 first commit	6 月之前
dot_product.hpp	4d99525703 first commit	6 月之前
infinite_line_functions.hpp	4d99525703 first commit	6 月之前
normalize.hpp	4d99525703 first commit	6 月之前