ENH: Replacing the 3 SVM classification applications to handle the OpenCV machine learning framework

ENH: Removal of the numbers of reference and produced labels input parameters in the otbComputeConfusionMatrix application

ENH: Definition of a format for confusion matrix files in otbComputeConfusionMatrix and otbFusionOfClassifications applications

ENH: ClassificationMapRegularization Application: structuring element (ball) with the same radius along X and Y, the corresponding documentation, test and baselines were updated.

ENH: Classification Map Regularization by Majority Voting, new parameter names in accordance with itkLabelVotingImageFilter

ENH: Majority Voting: multiple majority labels are set either to UnDefinedValue or to their original value (by default)

ENH: Moving and renaming Classification/otbLabeledImageColorMapping to Utils/otbColorMapping since it now gathers the three color mapping algorithms from OTB