Add project cmake
- Add cmake project to visual studio solution
- Add cmake project to solution
- Add external project cmake
- External project add cmake example
- Add boost to cmake project
- Add gtest to cmake project
- Add googletest to cmake project
- Add library to cmake project
- Add glfw to cmake project
- Add opencv to cmake project
- Add file to cmake project
- Add eigen to cmake project
- Add libpng to cmake project
- Cmake add project in subdirectory