Verify if permission was used via audit logs

[tomasalmeida]

Is your feature request related to a problem? Please describe.
some permissions are valid ones, but the app was deleted or changed and the permission is not needed anymore. Confluent offers audit log which logs the usage of permission and so, this log can be used to track if a permission is used or not.

Describe the solution you'd like
cache the basic info about permission usage (the permission itself is enough) and verify if each permission was used in the last X days, where X is the latest audit log availble

Describe alternatives you've considered
not available