STYLE: clean code, use OTB style

...ionalityReduction/app/otbImageDimensionalityReduction.cxx

...ionalityReduction/app/otbTrainDimensionalityReduction.cxx

...onalityReduction/app/otbVectorDimensionalityReduction.cxx

...on/include/otbDimensionalityReductionTrainAutoencoder.txx

...yReduction/include/otbDimensionalityReductionTrainPCA.txx

...yReduction/include/otbDimensionalityReductionTrainSOM.txx

.../include/otbTrainDimensionalityReductionApplicationBase.h

...nclude/otbTrainDimensionalityReductionApplicationBase.txx

...ing/DimensionalityReductionLearning/include/otbPCAModel.h

...g/DimensionalityReductionLearning/include/otbPCAModel.txx

...ensionalityReductionLearning/include/otbPCAModelFactory.h

...sionalityReductionLearning/include/otbPCAModelFactory.txx

...ing/DimensionalityReductionLearning/include/otbSOMModel.h

...g/DimensionalityReductionLearning/include/otbSOMModel.txx

...ensionalityReductionLearning/include/otbSOMModelFactory.h

...sionalityReductionLearning/include/otbSOMModelFactory.txx