fix: use ruff instead of flake8 for formatting

[paulschreiber]

Description

use ruff instead of flake8 for formatting

• remove flake8 as a dependency
• update config files (Makefile, ci.yml)
• add pyproject.toml
• add ruff to pre-commit-config
• re-format existing files
• ignore formatting changes (via .git-blame-ignore-revs)

Changes proposed in this pull request:

Type of change

• Bug fix
• New feature
• Vulnerabilities update
• Config changes
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires an admin update after deploy
• Includes a database migration removing or renaming a field