Add Poe as custom AI model provider

[yf-hk]

Can you please add Poe in addition to openai, anthropic and openrouter? They now support an API which has a lot of AI modules available.
Or, at least can you please allow custom url for the OpenAI API?
https://poe.com/blog/introducing-the-poe-api

[hbmartin]

Custom provider URLs and model names are fully support in my fork now (since this extension is no longer maintained):
https://github.com/hbmartin/secure-design