Refactored interference function creation and added isgisaxs6 sample

App/src/StandardSamples.cpp

Core/Algorithms/inc/IInterferenceFunctionStrategy.h

Core/Algorithms/inc/SimulationParameters.h

Core/Algorithms/inc/StrategyBuilder.h

Core/Algorithms/src/DecouplingApproximationStrategy.cpp

Core/Algorithms/src/IsGISAXSMorphologyFileStrategy.cpp

...Algorithms/src/LocalMonodisperseApproximationStrategy.cpp

...ithms/src/SizeSpacingCorrelationApproximationStrategy.cpp

Core/Algorithms/src/StrategyBuilder.cpp

Core/Core.pro

Core/Samples/inc/IDecoration.h

Core/Samples/inc/IInterferenceFunction.h

Core/Samples/inc/InterferenceFunction1DParaCrystal.h

Core/Samples/inc/InterferenceFunction2DLattice.h

Core/Samples/inc/IsGISAXSMorphologyFileDecoration.h

Core/Samples/inc/Lattice2DIFParameters.h

Core/Samples/inc/ParticleDecoration.h

Core/Samples/src/InterferenceFunction2DLattice.cpp

Core/Samples/src/ParticleDecoration.cpp

Examples/IsGISAXS_examples/ex-6/isgi_lattice.ima