What are your thoughts about adding the ACL user to monitor @antirez

I think this information may be useful for those debugging that are leveraging some of the complexity of ACLs. For example, when debugging commands it would be helpful to see the user to help determine if an ACLs command or keyspace restrictions is the culprit. While the error message for acls is very clear if you are debugging from an application perspective it may be helpful to understand the commands issued to help with the complexity of them.

Thoughts?