[HGF] Add _namep.m for hgf_binary_mab

[filippoferrari]

The _namep file is missing for the hgf_binary_mab model and, because of this, tapas_simModel.m fails when run at line 149. tapas_hgf_binary_mab_namep.m is a copy of tapas_hgf_binary_namep.m.

EDIT 05/10/23 Also fix inputs handling to be consistent with the AR1 model. Inputs to tapas_simModel are now tapas_simModel([inputs responses], 'tapas_hgf_binary_mab', ....etc)

Filippo