User to manage memsql ops web UI

(Ported from memsql-public-chat Slack channel)

mubi [11:52 AM]
how to create a user and allow memsql ops web UI

alec [1:53 PM]
@mubi see the commands at https://docs.memsql.com/memsql-ops-cli-reference/v6.5/memsql-ops-superuser-management/ (edited)