Restrict output to a given severity level

[Itxaka]

What would you like to be added:
Instead of a flag like --fail-on SEVERITY a new flag for output called something like --severity SEVERITY1,SEVERITY2 could eb added to produce only results that match eh given severities

Why is this needed:
we scan several distros and upload them to github security actions. This results in a huge file with a lot of reports in which we are not really interested (> 5900 entries). It would be nice to only output those of a given severity and above so we can have nicer smaller reports of the severities.

Additional context:

[Itxaka]

maybe the ignore config key can be expanded to also get a severity?