Add more embedded model providers to roocode

[dnslin]

Currently openai and ollama are not enough, I would like to add Google to get embedded model models from other AI providers.

[sfz009900]

I would also like to add google's embedded model support :)

[xezzon]

What about adding an OpenAI Compatible mode just like the API provider configuration do?

[sfz009900]

@xezzon It doesn't provide the ability to customize the base URL :)

[xezzon]

I meant to draft a feature request to add the OpenAI Compatiable option for the Embeddings Provider.