Push/sync member data with Neon CRM

[jim]

The tool library uses Neon CRM to keep track of certain member data, and it would be good to push members and memberships into that system so we don't have to manually upload exports.

We started to implement this a few years back, and now that we've grown a lot this is becoming more pressing.

Here's the code we have: https://github.com/chicago-tool-library/circulate/blob/main/app/lib/neon.rb