WIP: Add PhenomHM for review lalinference_o2 compatible
This is the MR that the phenomHM review will work off of.
This mergers the PhenomHM (aligned-spin higher mode BBH model) into the lalinference_o2 branch from the waveforms review fork of lalsuite.
The phenomHM waveform review wiki page is here
Please assign this merge request to the waveform co-chairs @frank-ohme and @harald.pfeiffer and the PE co-chairs @vivien and @cjhaster