Prefer '= default' over '{}' (advised by clang-tidy)

Core/Aggregate/InterferenceFunction1DLattice.cpp

Core/Aggregate/ParticleLayout.cpp

Core/Computation/LayoutStrategyBuilder.cpp

Core/Detector/ConvolutionDetectorResolution.cpp

Core/Detector/RectangularDetector.cpp

Core/Detector/RegionOfInterest.cpp

Core/Detector/ScanResolution.cpp

Core/Intensity/IHistogram.cpp

Core/Multilayer/FormFactorDWBA.cpp

Core/Multilayer/FormFactorDWBAPol.cpp

Core/Multilayer/Layer.cpp

Core/Multilayer/LayerInterface.cpp

Core/Parametrization/DistributionHandler.cpp

Core/Parametrization/IterationStrategy.cpp

Core/Parametrization/ParameterDistribution.cpp

Core/Parametrization/ParameterPool.cpp

Core/Particle/Crystal.cpp

Core/Particle/FormFactorCoreShell.cpp

Core/Particle/MesoCrystal.cpp

Core/Particle/ParticleComposition.cpp