chore: move to Ruff-format

[henryiii]

This moves to Ruff-format. Most changes are better (and the one that's worse is being fixed, see astral-sh/ruff#8226).

I've also removed a few checks that were redundant (pyupgrade) or slow and not very helpful / probably redundant (check debug statements).

An uncached run of black took 4.63s. With caching it's 0.4s. Ruff-format doesn't have caching yet AFAIK, but it takes 0.06 seconds.

Dropping pyupgrade saves 2 more seconds. Debug statements saves another 0.5 seconds.

Total time is now under 4 seconds for me. It used to be 6.5-10 seconds.

See scientific-python/cookie#299.

[codecov]

Codecov Report

Merging #2777 (47c3b49) into main (e8072ce) will increase coverage by 0.01%.
Report is 3 commits behind head on main.
The diff coverage is 100.00%.

Additional details and impacted files

Files	Coverage Δ
src/awkward/_connect/numba/arrayview.py	93.73% <ø> (+0.36%)	⬆️
src/awkward/contents/regulararray.py	85.14% <100.00%> (ø)
src/awkward/operations/ak_concatenate.py	96.29% <ø> (ø)

... and 3 files with indirect coverage changes