beeware/Python-support-testbed

AI Summary: Migrate a Python project's linting and formatting from Flake8/isort/Black to Ruff. This involves configuring Ruff in `pyproject.toml` and `.pre-commit-config.yaml`, removing old configurations, running pre-commit hooks, and creating an ignore list for specific Ruff rules. The process will be split into multiple pull requests, one for initial setup and subsequent ones for addressing each set of related Ruff errors.