Merge branch '31-image-klasse' into 'develop'

config/Sources.cmake

include/vkcv/BufferManager.hpp

include/vkcv/Core.hpp

include/vkcv/Handles.hpp

include/vkcv/Image.hpp

include/vkcv/PassConfig.hpp

projects/first_mesh/src/main.cpp

src/vkcv/BufferManager.cpp

src/vkcv/Core.cpp

src/vkcv/Framebuffer.cpp

src/vkcv/Framebuffer.hpp

src/vkcv/Image.cpp

src/vkcv/ImageManager.cpp

src/vkcv/ImageManager.hpp

src/vkcv/PassManager.cpp

src/vkcv/PassManager.hpp

src/vkcv/PipelineManager.cpp

src/vkcv/PipelineManager.hpp