Set user status for a given duration

[Vringe]

Is your feature request related to a problem? Please describe. I regularly observe that I and also my colleagues set their status to "busy", "away" or "offline" and then forget to set it back to "online".

Describe the solution you'd like As already suggested by @marcus-no in https://github.com/RocketChat/Rocket.Chat/issues/2422#issuecomment-454668328, it would be great to have a such command.

/away <optional time in minutes, remove away status when passed> <optional away message>

Describe alternatives you've considered Maybe we could make it also configurable via UI

Additional context