ci: adds taplo.toml, pyproject.toml

[dangotbanned]

Will close #646

Description

This PR adds formatting of .toml via taplo and formatting & linting of python with ruff.

The ruff config is based on what we use for altair in (https://github.com/vega/altair/blob/main/pyproject.toml)

I've disabled ruff for essentially anything that I haven't written.
If there is a desire to clean up old code, we can work on reducing the scripts listed in follow-up PRs:

vega-datasets/pyproject.toml

Lines 18 to 30 in c48731b

	[tool.ruff]
	extend-exclude = [
	".venv",
	"scripts/budget.py",
	"scripts/flights.py",
	"scripts/github.py",
	"scripts/make-unemployment-across-industries.py",
	"scripts/update_countries_json.py",
	"scripts/update_gapminder.py",
	"scripts/weather.py",
	# TEMPORARY
	"scripts/build_datapackage.py",
	]

Note

The build_datapackage.py exclusion will be dropped after this is merged.
I fixed these already in (fbd1be5)

Tasks

• Add config files
• Adapt actions workflow (3bb974a)
  • uvx taplo fmt (9a0a22d)
  • uvx ruff check; uvx ruff format (3706ebb)

[dangotbanned]

@domoritz if you don't have any objections, I'd like to merge this before #643

Then I can make sure that has any ruff/taplo fixes applied before that hits main