[ENH] - HCP Pipelines module

[jerdra]

The standard pipeline at the moment is the ciftify/fmriprep route, however some acquisitions are better processed using HCP-Pipelines (HCP and potentially ABCD sequences).

The rest of the pipeline is agnostic to T1 processing and surface generation (as long as they're freesurfer compatible).

TO-DO:

• Build an HCP pipelines module that outputs the required cifti surfaces
• Wrap the fs2gifti and cifti_mesh workflows into a single workflow, HCP pipeliens doesn't need f2gifti
• Run HCP sequence data through the pipeline