Ability to augment the error message of rules

[mrcljx]

We use E711 and E712 which tell the user that == None should be is None. The problem is that there's an exception to that rule: when using SQLAlchemy one MUST use .filter(column == None) so that column.__eq__ is called.

It would be great if we could provide some rationale/additional info in Ruff error messages, with something like:

[rules]
E711.rationale = ""

[Mulugruntz]

Even better if it could not flag it as E711, as it's the correct syntax.

[Apakottur]

Is it possible to use .filter(column.is_(None)) in your case? Maybe that avoids the rule whatsoever