These readers will determine which permissions
are available for the incoming credentials.
Their results then get combined in a UnionReader
and authorized in a PermissionBasedAuthorizer
This adds options for enabling setup to the config folder.
All default configs with permanent storage (file/sparql)
are configured to require setup at server start.
Memory-based configs merely have it as an option.
Each IDP class using storage now has a different storage.
This way those classes don't have to worry about clashing keys anymore.
All internal storage is now in the /.internal/ container,
thereby making it easier to take the location of the internal data into account:
only 1 path needs to be blocked and a regex router handling internal data
differently only has to match 1 path as well.
