Second stage of translation of ParticleDistributionItem to domain object

App/src/TestIsGISAXS12.cpp

App/src/TestIsGISAXS5.cpp

Core/PythonAPI/inc/ParticleDistribution.pypp.h

Core/PythonAPI/inc/PythonCoreList.h

Core/PythonAPI/src/DistributionCosine.pypp.cpp

Core/PythonAPI/src/DistributionGate.pypp.cpp

Core/PythonAPI/src/DistributionGaussian.pypp.cpp

Core/PythonAPI/src/DistributionLogNormal.pypp.cpp

Core/PythonAPI/src/DistributionLorentz.pypp.cpp

Core/PythonAPI/src/ParameterDistribution.pypp.cpp

Core/PythonAPI/src/ParticleDistribution.pypp.cpp

Core/PythonAPI/src/PythonModule.cpp

Core/Samples/inc/ISampleVisitor.h

Core/Samples/inc/ParticleDistribution.h

Core/Samples/inc/ParticleLayout.h

Core/Samples/src/ISampleVisitor.cpp

Core/Samples/src/ParticleDistribution.cpp

Core/Samples/src/ParticleLayout.cpp

Core/StandardSamples/IsGISAXS02Builder.cpp

Core/StandardSamples/IsGISAXS03Builder.cpp