[#90] Fixed missing include and added typedef

include/vkcv/DescriptorConfig.hpp

modules/material/src/vkcv/material/Material.cpp

modules/upscaling/src/vkcv/upscaling/FSRUpscaling.cpp

src/vkcv/Core.cpp

src/vkcv/DescriptorManager.cpp

src/vkcv/ShaderProgram.cpp