Replace black with ruff format

[yaugenst-flex]

Since ruff format has had feature parity with black for a while now, it might be nice to move away from black because 1. speed and 2. one less dependency.

[so-rose]

A humble perspective from the wilds: It's very, very good. ruff fmt also allows single-quote/tabs; subjectively, that's already reason enough, before the speed comes into play.

Just mind the conflicting rules leading to non-deterministic output. The docs recommend all kinds of stuff, generally I've found these are sufficient:

ignore = [
	"COM812",  # Conflicts w/Formatter
	"ISC001",  # Conflicts w/Formatter
	"Q000",  # Conflicts w/Formatter
	"Q001",  # Conflicts w/Formatter
	"Q002",  # Conflicts w/Formatter
	"Q003",  # Conflicts w/Formatter
	"D206", # Conflicts w/Formatter
...
]

Here's my current pyproject.toml ignorelist for reference.

Hope it can help!

[tylerflex]

Thanks @so-rose !