feat: Add ollama cloud as chat and web search provider

[LazyGeniusMan]

Ollama have cloud offering that host big model like GLM, Kimi, Minimax, etc¹. It can be accessed via local ollama instance (need to be logged in to ollama cloud) by pulling olama model with cloud tag but it can also accesed directly via https://ollama.com/v1 using ollama cloud API key so that local ollama instance is not needed

Ollama also have web search capabilities², it can be accesed via local ollama instance (need to be logged in to ollama cloud) or via ollama cloud (need ollama cloud API key in auth header)

Reference: https://docs.ollama.com/capabilities/web-search

Footnotes

1. https://docs.ollama.com/cloud ↩

2. https://docs.ollama.com/capabilities/web-search ↩

[Goldziher]

PR welcome