C++ 通过dll与Unity联动

主要参考文章和连接，以证实可行

https://blog.csdn.net/yuhan61659/article/details/80335574
https://github.com/caimagic/Unity_Call_Cplusplus-s-Dll/blob/master/cppDll/cppDll/test.cpp
https://github.com/caimagic/Unity_Call_Cplusplus-s-Dll/blob/master/unityTest/Assets/NewBehaviourScript.cs