add link to llama-stack API spec

[feloy]

Is your enhancement related to a problem? Please describe

Add link to llama-stack API spec, in the Llama Stack page, when the stack is up

Describe the solution you'd like

Add link to llama-stack API spec, in the Llama Stack page, when the stack is up

Describe alternatives you've considered

No response

Additional context

No response

[feloy]

It seems that the llama stack server does not send expected Access-Control-Allow-Origin response header, necessary to allow requests from the Swagger UI in the browser.

Here is what the llama.cpp is doing for this: https://github.com/ggml-org/llama.cpp/pull/4514/files