Review/doctest matfaust.proj and add to doctest ci job.

.gitlab-ci.yml

wrapper/matlab/+matfaust/+proj/@anticirc/anticirc.m

wrapper/matlab/+matfaust/+proj/@blockdiag/blockdiag.m

wrapper/matlab/+matfaust/+proj/@circ/circ.m

wrapper/matlab/+matfaust/+proj/@const/const.m

wrapper/matlab/+matfaust/+proj/@hankel/hankel.m

wrapper/matlab/+matfaust/+proj/@normcol/normcol.m

wrapper/matlab/+matfaust/+proj/@normlin/normlin.m

wrapper/matlab/+matfaust/+proj/@proj_id/proj_id.m

wrapper/matlab/+matfaust/+proj/@skperm/skperm.m

wrapper/matlab/+matfaust/+proj/@sp/sp.m

wrapper/matlab/+matfaust/+proj/@spcol/spcol.m

wrapper/matlab/+matfaust/+proj/@splin/splin.m

wrapper/matlab/+matfaust/+proj/@splincol/splincol.m

wrapper/matlab/+matfaust/+proj/@spsymm/spsymm.m

wrapper/matlab/+matfaust/+proj/@sptril/sptril.m

wrapper/matlab/+matfaust/+proj/@sptriu/sptriu.m

wrapper/matlab/+matfaust/+proj/@supp/supp.m

wrapper/matlab/+matfaust/+proj/@toeplitz/toeplitz.m

wrapper/python/pyfaust/proj.py