Standardize all documentation

src/.removed_features/domain/Domain.hpp

...ed_features/log_fit_c_regressor/ModelLogRegressorFitC.hpp

...ed_features/log_fit_c_regressor/SISSOLogRegressorFitC.hpp

src/classification/ConvexHull1D.hpp

src/classification/LPWrapper.hpp

src/classification/SVMWrapper.cpp

src/classification/SVMWrapper.hpp

src/classification/prop_sorted_d_mat.hpp

src/descriptor_identifier/Model/Model.cpp

src/descriptor_identifier/Model/Model.hpp

src/descriptor_identifier/Model/ModelClassifier.hpp

src/descriptor_identifier/Model/ModelLogRegressor.hpp

src/descriptor_identifier/Model/ModelRegressor.hpp

src/descriptor_identifier/SISSO_DI/SISSOClassifier.cpp

src/descriptor_identifier/SISSO_DI/SISSOClassifier.hpp

src/descriptor_identifier/SISSO_DI/SISSOLogRegressor.cpp

src/descriptor_identifier/SISSO_DI/SISSOLogRegressor.hpp

src/descriptor_identifier/SISSO_DI/SISSORegressor.cpp

src/descriptor_identifier/SISSO_DI/SISSORegressor.hpp

src/descriptor_identifier/SISSO_DI/SISSO_DI.hpp