implement PGI regularisation

[craigmillernz]

Any plans to implement the Petrophysical Guided Inversion regularisation as an option?
e.g.
https://docs.simpeg.xyz/content/examples/10-pgi/plot_inv_0_PGI_Linear_1D.html#sphx-glr-content-examples-10-pgi-plot-inv-0-pgi-linear-1d-py

[github-actions]

JIRA issue [GEOPY-553] was created.

[domfournier]

hi @craigmillernz , sorry for the late reply.
The answer is yes, and will likely by bumped up the priority list as requested by the steering committee. TBD