[DISCUSSION] Permission management API and WebUI

I am not quite sure if I understood the permission management of drill correctly. It seems that we need to set users with different permissions in the data source and configure them in the storage plugin, and then implement permission control by setting user impersonation on the command line.

I don‘t know whether permission management as a management function can provide a WebUI and system interface API. In this way, the current permission configuration can be clearly displayed to the administrator and the administrator can adjust the permission easily.