Update docs to remove flake8, isort mentions and add ruff

[melissawm]

References and relevant issues

Partially addresses #377.

Mentions to setup.cfg remain in the plugin docs which need to be updated separately.

Description

Updates mentions of flake8 and isort by ruff.

Also removes some explicit mentions of ignore rules since these get out of date quickly and can be checked directly in the pyproject.toml file.

[DragaDoncila]

LGTM! Thanks @melissawm

[Czaki]

We are using ruff-format, not black now.
It is slimier to black, but not equivalent.

[melissawm]

Ah right -I only see one rule though

https://github.com/napari/napari/blob/b9dc8dca1e1afa7567586e7ffa7a36cc7cd9fb6f/pyproject.toml#L245

so I'll again just point people to the pyproject.toml in case there are future updates.

[Czaki]

yes. The list of used linters is .pre-commit-config.yaml https://github.com/napari/napari/blob/b9dc8dca1e1afa7567586e7ffa7a36cc7cd9fb6f/.pre-commit-config.yaml#L6

[willingc]

@melissawm If you scroll down from your link, ruff is performing all of the task that you had in the original text since it is a drop-in replacement for these tools. Perhaps link out to ruff docs: https://docs.astral.sh/ruff/linter/#the-ruff-linter

[willingc]

@melissawm If you scroll down from your link, ruff is performing all of the task that you had in the original text since it is a drop-in replacement for these tools. Perhaps link out to ruff docs: https://docs.astral.sh/ruff/linter/#the-ruff-linter

[psobolewskiPhD]

Suggested change

	* [black](https://github.com/psf/black)
	* [ruff-formater](https://docs.astral.sh/ruff/formatter/)

[psobolewskiPhD]

I popped the ready to merge because there is one more place where black needs to be replaced with ruff-formatter.
Otherwise, looks great.