Wrting a parallel version of the GKS first order in GKS2.cpp

src/language/modules/SchemeModule.cpp

src/scheme/CMakeLists.txt

src/scheme/GKS.cpp

src/scheme/GKS2.cpp

src/scheme/GKS2.hpp

src/scheme/GKSNavier.cpp

src/scheme/GKSNavier.hpp