FormFactors: add CantellatedCube

Core/HardParticle/FormFactorCantellatedCube.cpp

Core/HardParticle/FormFactorCantellatedCube.h

Core/HardParticle/FormFactorTruncatedCube.h

Core/Parametrization/INodeVisitor.h

Core/StandardSamples/SampleComponents.cpp

Core/includeIncludes/HardParticles.h

Doc/FFCatalog/FFCatalog.pdf

Doc/FFCatalog/FormFactors.tex

Doc/FFCatalog/fig/blue/TruncatedCube.png

Doc/FFCatalog/fig/cuts/Facettedcube1_2dxy.pdf

Doc/FFCatalog/fig/cuts/Facettedcube1_2dxy.svg

Doc/FFCatalog/fig/cuts/Facettedcube1_2dxz.pdf

Doc/FFCatalog/fig/cuts/Facettedcube1_2dxz.svg

Doc/FFCatalog/fig/ff2/sim_CantellatedCube.py

...simulation/ex01_BasicParticles/AllFormFactorsAvailable.py

...ata/Core/FormFactorsWithAbsorption_CantellatedCube.int.gz

Tests/ReferenceData/Core/FormFactors_CantellatedCube.int.gz

Tests/UnitTests/Core/Sample/FormFactorBasicTest.cpp

Wrap/swig/libBornAgainCore.i

auto/Wrap/doxygen_core.i