Switch to OpenAI library instead of google-generativeAI

[nonprofittechy]

[BryceStevenWilley]

Hook for myself to start from: https://github.com/SuffolkLITLab/docassemble-ALToolbox/blob/f719de091cc1181cf5ce7929f42a3852ccdf5154/docassemble/ALToolbox/llms.py#L6

[nonprofittechy]

Specifically this is the param we need to define:

https://github.com/SuffolkLITLab/docassemble-ALToolbox/blob/f719de091cc1181cf5ce7929f42a3852ccdf5154/docassemble/ALToolbox/llms.py#L124

This is the URL we need to give it: https://generativelanguage.googleapis.com/v1beta/openai/