Add TopoFit

[hvgazula]

The saved model and predict.py scripts can be found at https://github.com/neuroneural/topofit_fork.

[hvgazula]

@satra Topofit uses freesurfer for preprocessing the inputs before inference. Should we include freesurfer as a requirement to enable preprocessing or should we warn the user that the data has to be preprocessed first outside the zoo?

[satra]

you can make preprocess an option. presumably you can use the minimal freesurfer for this instead of all of freesurfer. see neurodocker for the min recon-all version. however this can be one of those MVP, MVP+1 things. MVP - don't include, file an issue, include in MVP + 1.

[hvgazula]

Makes sense. Thank you.