Provide a way to create a list of members who are not donating

[Andrew-Dickinson]

Olivier occasionally does a "pledge drive" style bulk email to non-donating members encouraging them to sign up for monthly donations. We need to give him a way to list out members who should be included on that email.

We will need to query the stripe API in order to do this, likely coordinating with Jason Howard or Daniel to get the necessary access.

I think for MVP this might take the form of an offline script, but certainly some kind of dynamic view in the meshdb admin UI might be feasible also