Add StoppingCriterion.erreps in matfaust to parameterize PALM4MSA/hierarchical 2020.

src/algorithm/factorization/faust_palm4msa2020.h

src/algorithm/factorization/faust_palm4msa2020.hpp

...aust/+factparams/@ParamsHierarchical/ParamsHierarchical.m

...ab/+matfaust/+factparams/@ParamsPalm4MSA/ParamsPalm4MSA.m

...tfaust/+factparams/@StoppingCriterion/StoppingCriterion.m

wrapper/matlab/src/mexHierarchical2020.cpp.in

wrapper/matlab/src/mexHierarchical2020_gpu2.cpp.in

wrapper/matlab/src/mexPALM4MSA2020.cpp.in

wrapper/matlab/src/mexPALM4MSA2020_gpu2.cpp.in

wrapper/matlab/tools/mx2Faust.cpp

wrapper/matlab/tools/mx2Faust.h

wrapper/matlab/tools/mx2Faust.hpp