ENH: add vfn option in ValidateImageClassifier application to be consistent with training application.

ENH: add ValidateImagesClassifier application to validate a classification model obtained with TrainMachineLearningImagesClassifier.

ENH: elevation group is not mandatory then inactive by defaut, check if it was activated before using its parameters

SetName needs access to DocExample structure, which is created during initialization

ENH: vector data projection filter have been replaced by vectordataintoimageprojection filter, dem handling.