[broken] the big split basically successful, but MC is broken

Core/Computation/DecoratedLayerComputation.cpp

Core/Computation/DecoratedLayerComputation.h

Core/Computation/MainComputation.cpp

Core/Multilayer/DecouplingApproximationStrategy.cpp

Core/Multilayer/DecouplingApproximationStrategy.h

Core/Multilayer/IInterferenceFunctionStrategy.cpp

Core/Multilayer/IInterferenceFunctionStrategy.h

Core/Multilayer/SSCApproximationStrategy.cpp

Core/Multilayer/SSCApproximationStrategy.h

auto/Wrap/libBornAgainCore_wrap.cpp

auto/Wrap/libBornAgainCore_wrap.h