This also adds the ability to change the client role if needed and
improves the usage information and output of the CLI commands.
Signed-off-by: Michael Mayer <michael@photoprism.app>
You can now run "photoprism auth add" to create new client access tokens
that allow external applications to use the built-in REST API.
Signed-off-by: Michael Mayer <michael@photoprism.app>