Request: a build option to disable the web UI embedded into the llama-server executable

[SamuelTallet]

Hello everyone,

What do you think about adding a CMake option like LLAMA_SERVER_NO_WEBUI (default: OFF) here?

This way, the llama-server binary could stay light for those who don't need the embedded web UI.

In other words, with this option ON, index.html.gz file would not be embedded into llama-server.