[sdtdserver] Feature request: announce server restarts ingame via telnet

Hello,

I don't know if this is possible, but it would be very helpful, if the user could be warned via ingame chat, when the server will be restarted.
From about 30 minutes before comes the first announcement, then 15 mins and then maybe from the 5th minute starts an minute countdown.

Periodic reboots are pretty important in 7 days to Die, not only for performance reasons, it fixes also temporary bugs.
Thanks for reading.