ade: Minor code cleanups
As a followup of !58 (merged) do the @classmethod cleanups and take the chance to enforce some linting on CI with isort/black/flake8.
🟡 v2023.5 entered Soft Feature Freeze, no additional features will be accepted • schedule
As a followup of !58 (merged) do the @classmethod cleanups and take the chance to enforce some linting on CI with isort/black/flake8.