Update file docstrings for C++ header files and standardize path names

src/.removed_features/domain/Domain.hpp

...ed_features/log_fit_c_regressor/ModelLogRegressorFitC.cpp

...ed_features/log_fit_c_regressor/ModelLogRegressorFitC.hpp

...ed_features/log_fit_c_regressor/SISSOLogRegressorFitC.cpp

...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.cpp

src/descriptor_identifier/model/ModelClassifier.hpp

src/descriptor_identifier/model/ModelLogRegressor.cpp

src/descriptor_identifier/model/ModelLogRegressor.hpp

src/descriptor_identifier/model/ModelRegressor.cpp

src/descriptor_identifier/model/ModelRegressor.hpp

src/descriptor_identifier/solver/SISSOClassifier.cpp

src/descriptor_identifier/solver/SISSOClassifier.hpp