New example IP+VRM

[prisae]

Add a Viscous Remanent Magnetization (VRM) based on a great input from @orerocks.

[coveralls]

Pull Request Test Coverage Report for Build 21099505303

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 99.304%

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Totals
Change from base Build 20867475489:	0.0%
Covered Lines:	3141
Relevant Lines:	3163

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💛 - Coveralls

[prisae]

Hi @orerocks - I extracted an example from your great notebook. It is not final yet, but I would already like to ask:

• Is that OK for you?
• Does it look OK for you?

You see the rendered version here: https://empymod--248.org.readthedocs.build/en/248/gallery/tdomain/ip_vrm.html

(I wrote you some more on the SimPEG chat.)