[Bug] Missing "all" extra in pyproject.toml causes installation warning

[songyuc]

Description
When trying to install the package with all optional dependencies using uv pip install -e ".[all]", I receive the following warning:
warning: The package 'lmms-eval' ... does not have an extra named 'all'

Steps to reproduce

1. Clone the repository.
2. Run uv pip install -e ".[all]".

Expected behavior
The command should install all optional dependencies without warnings.

Suggested Fix
Add an all key to [project.optional-dependencies] in pyproject.toml that includes all other optional groups.

[Luodian]

You're right, the [all] extra is missing. Looking at pyproject.toml, we have core, server, audio, metrics, gemini, reka, qwen, and mmsearch - but no all that combines them.

For now you can use:

uv pip install -e ".[core,gemini,reka,qwen,mmsearch]"

A PR adding the all extra would be welcome.