Reduce list of dependencies

[aknoerig]

setup.py defines a pretty heavy list of dependencies, that are automatically installed during a pip install:

 'optimum-quanto'
, 'torch'
, 'torchvision'
, 'torchaudio'
, 'sentencepiece'
, 'accelerate'
, 'peft'
, 'transformers'
, 'diffusers'
, 'lark'
, 'protobuf'
, 'ipykernel'
, 'ipywidgets'
, 'safetensors'

It seems like many of these only are required by the samples, not by the library itself, and are causing unnecessary dependency issues upon installation in more complex environments.

Would you accept a PR that reduces the list to the minimum, and moving all others to requirements.txt?

[Teriks]

using extras might be neat

setup(
     install_requires = [
        “lib-dep”, “lib-dep2”
    ],
    extras_require={
        "examples": [ “example-dep1”, “example-dep2”]
    }
)

and then on install, optionally install example deps:

pip install .[examples]

Above example shows install while in project directory.

Probably would require some install documentation updates in readme.