Configure ruff import sorting and drop isort support

[deen13]

Short description

This pull request enables import sorting for ruff and tick some of the remaining boxes in #2442.

Side effects

While Ruff claims to be nearly equivalent to Isort when profile = "black", it formats the imports slightly differently. This pull request removes support for isort and deprecates black in our documentation to address the conflicting formatters.

Further Information: https://docs.astral.sh/ruff/faq/#how-does-ruffs-import-sorting-compare-to-isort

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