Definitions for Information, Warning, and Error Severities

In the code comments for the RuleSeverity enum, a warning does not follow PowerShell's "recommended" guidelines and Errors do not conform to PowerShell's "required" guidelines. Information rules are "recommended by PowerShell best practice".

I just posted #466 and now that I am thinking about it, I am not sure what the specific criteria is that would differentiate Warnings from Errors. For my team, at my company, we cannot have any hard coded passwords in a script, so this would definitely be an Error. However, that might not be the case for everyone everywhere.

The definitions of Warning and Error severity should be clearly defined in the documentation. I have some ideas and opinions here, as I am sure everyone in the PS community does. Would it make sense to use https://github.com/PoshCode/PowerShellPracticeAndStyle as a starting point for best practices and guidelines?

I am also wondering if it would make sense to have the ability to override severity levels for built in rules.

Beginne mit den Kommentaren der RuleSeverity-Enumeration und vergleiche ihre aktuelle Formulierung mit den in der Issue verlinkten PowerShellPracticeAndStyle-Richtlinien. Definiere und dokumentiere Kriterien, die die Schweregrade Information, Warning und Error unterscheiden, und kläre, ob Überschreibungen integrierter Schweregrade im Umfang liegen.