Experiment - Add Ruff formatter/linter

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Summary | Résumé

This experimental PR migrates our linters/formatters to Ruff which:

• Has drop in feature parity with black, isort, and flake8
• Is written in Rust and hence faster than black, isort and flake8
• Has supporting Github actions and VSCode extensions
• Caches results for even snappier analysis after an initial run

Changelog:

• Replaced black, isort, and flake8 with Ruff
• Added the poetry plugin poetry-plugin-sort which organizes dependencies in pyproject.toml
• Added the Ruff plugin to devcontainer.json
• Updated the betterTOML plugin as it was deprecated
• Removed deprecated linter settings in devcontainer.json

File change list (excludes formatting changes):

Because I wasn't smart enough to commit the formatting changes separately... 🤦

• devcontainer.json
• notify-dev-entrypoint.sh
• test.yaml
• .gitignore
• Makefile
• pyproject.toml
• run_tests.sh
• setup.cfg

Before:

After:

After first run with cache: