Evaluate usefulness of ToFu

[eldond]

https://github.com/ToFuProject/tofu

"tofu stands for Tomography for Fusion, it is an IMAS-compatible open-source machine-independent python library."

There's no rule that says we have to be pure julia. If we can hand our data dictionary (as a file on disk) to a python script to let it do some processing, fine. This might be good. I don't think our diagnostics at the top of the list need tomography, but if we get there, we shouldn't forget this thing.