Multi-angle QSM model

[maf88]

I'd like to be able to create QSM maps from a multi-angle acquisition, such as the COSMOS algorithm. We can supposed that the acquisition were already been aligned.

[agahkarakuzu]

Source code is available on Berkin Bilgic's software page for COSMOS:

https://martinos.org/~berkin/software.html

This would require adapting it as a qMRLab module first.