[feature]: adds ollama cloud provider

[gturpin-dev]

Pre-flight checks

• I searched existing issues and did not find a duplicate request.
• I reviewed current behavior on the production released OpenCode version.

OpenCode version reviewed

1.4.1

Problem statement

Hi 👋

Sorry if I'm wrong, but I just add Ollama Cloud provider with API Key.
I don't think the /quota command can retrieve the quota for this provider for now.

Please tell me if it's a misunderstanding configuration from my own.

Thanks for you package btw 🎉

Proposed change

See the quota usage of the Ollama Cloud provider in related commands of this package.

Alternatives considered

No response

Acceptance criteria

No response

[slkiser]

Hello, I can't add this since Ollama cloud doesn't support it yet, but there is an issue there that I am now tracking: ollama/ollama#12532