feat(opencode): added logic to probe loaded models from lmstudio and ollama

[goniz]

What does this PR do?

• Added core logic for enumerating loaded models from Ollama and LMStudio in packages/opencode/src/provider/local/index.ts
• Added debug cli opencode debug provider probe <type: ollama|lmstudio> <url: string>

How did you verify your code works?