Merge branch '16-swapchain-class' into 18-first-triangle

config/Sources.cmake

include/vkcv/Core.hpp

include/vkcv/SwapChain.hpp

include/vkcv/Window.hpp

projects/first_triangle/src/main.cpp

src/vkcv/Context.cpp

src/vkcv/Core.cpp

src/vkcv/SwapChain.cpp

src/vkcv/Window.cpp