Part of #139. Depends on Phase 1 and on the MIR/PMI epic (#133).
Once #133's MIR/PMI port lands, expose it through the MNE-facing wrapper too
(e.g. ica.mir(raw) / ica.pmi()), so MNE-side users get the same
separation-quality metrics EEGLAB-side users get via #133's phases.
Part of #139. Depends on Phase 1 and on the MIR/PMI epic (#133).
Once #133's MIR/PMI port lands, expose it through the MNE-facing wrapper too
(e.g.
ica.mir(raw)/ica.pmi()), so MNE-side users get the sameseparation-quality metrics EEGLAB-side users get via #133's phases.