Add data from /admin/dashboard/stats to usage ping
Description
It would be valuable to have the data from /admin/dahsboard/stats
to be included in the usage ping.
Proposal
Send data about the number of users with highest permission level of 'x' back with usage ping. Especially when evaluating the impact of decisions like "what if we made Guest users free?"
Links / references
From Slack with @JobV and @pidge
/cc @tipyn