Automated formatting

[Andrei-Aksionov]

Hi there 👋

Another round of code-style fixes:

ruff check * \
    --select E,W,F,S \
    --extend-select ANN001,ANN201,ANN205,ANN206,ARG001,C4,I001,PT,RET,SIM \
    --ignore C408,E402,E501,E731,PT004,PT007,S101,S108,S113,S310,S603 \
    --per-file-ignores "*/**/__init__.py":I001,"*/**/__init__.py":F401,"tests/*":ANN,"*/**/unsloth/kernels/*":ALL \
    --line-length 120 \
    --target-version py38 \
    --fix-only; \
black \
    -l120 \
    -C \
    --preview \
    --target-version py38 \
    config_hub eval extensions litgpt tests \
    --exclude unsloth/kernels

Notable changes:

• disabled F401 (imported but unused) for __init__.py files.
• excluded unsloth/kernels from linting.
• added extensions folder to the list.

---

For those preferring pre-commit I updated a corresponding config.

[carmocca]

The kernels directory shouldnt be formatted to keep the original style of the code

[Andrei-Aksionov]

Oops.
Fixed.
+ updated CLI command in the PR description.

[Borda]

Why not add the pre-commit or at least write this configuration to the already existing pyproject.toml?

[Andrei-Aksionov]

@Borda when Lit-GPT was a set of scripts it was not the option, since the decision was made to not have such config files in the repo (I believe for the sake of simplicity).
But now we have LitGPT, so I think we can revisit this question. @lantiga?

[Borda]

as the pyproject already exists, I would rather have the configuration there than in some PR description which may differ over time...