feat: add multiple providers in addition to anthropic

[rrfaria]

Hi, I would like to share a contribution

this MR allow project to work with multiple providers

now you can use gemini, openAi, ollama, anthropic and if you would like to add more providers you can fallow this docs:
https://sdk.vercel.ai/providers/ai-sdk-providers

[rrfaria]

this is a demo test using gemini api:

[Yoko-0x0]

Incredible, excellent contribution

[timoa]

Great contribution! Maybe we can merge your code with the @coleam00 fork?

He had ability to select the LLM provider and model from the landing page and during the chat step:

Repo: https://github.com/coleam00/bolt.new-any-llm

You can see it on his YouTube video:
https://www.youtube.com/watch?v=3PFcAu_oU80

[ijijioritain]

typo - did you mean to spell anthropic ? @rrfaria

[Sunwood-ai-labs]

I implemented Bedrock based on https://github.com/coleam00/bolt.new-any-llm! (#689)

[dustinwloring1988]

Look good, thanks for adding this I will keep using it in my local instance