A minor refinement of the Ruff ruleset

[mderner-ca]

Adds:

• Tryceratops - better Exception management
• Eradicate - no commented out code
• Flake8-Logging - correct management of logging instances
• McCabe complexity - warns about overly complex programs (measured by cyclomatic complexity)
• Ignore for *args type hinting
• Allow raise of vanilla exception (now disallowed by tryceratops) in tests
• Links for rules - so anyone copying this template can easily assess for themselves what they like and don't like

Moves:

• Ignore assert - this definitely wants to be an enforced rule, so moved to be ignored only in tests