Rule identifiers + description should be a static pair / or modify violation parsing to accomodate for different descriptions

[smals-mavh]

In violation parsing, violations can be grouped by rule.
The description used is the one from the first violation that is parsed. The message can be different for every violation.

Currently some rules put different descriptions for the same violation identifier (possibly resulting in wrongly parsed violations in the output)

Probably best to have an enum with the identifier and description for each rule, and use that in the violation creation. And update the rules to use the message property in the violation object to differentiate different kind of violations within the same rule.