[18]merge 11-pipeline-state-object

config/Sources.cmake

include/vkcv/Core.hpp

include/vkcv/Handles.hpp

include/vkcv/Pipeline.hpp

include/vkcv/Renderpass.hpp

projects/first_triangle/src/main.cpp

src/vkcv/Core.cpp

src/vkcv/Pipeline.cpp

src/vkcv/Renderpass.cpp