Game Version number: recent
Modded?: No

Issue Description:
Once a Server is full, Admins are unable to join a server quickly, whenever needed. In combination with very limited information and tools available via RCon (Battlemetrics), this makes it almost impossible to moderate a Server!
Also, Servers for the game are rather expensive. If we could extend Admin Whitelisting to communities, Server Owners would have an option to generate some donations for it by offering Whitelisting to donators/patrons. Community Servers really keep the Game alive, so it would be a good bonus.

This could achieved by adding a whitelist.cfg to the Server Files that is based off Steam64 or ReforgerIDs and potentially the option for 1 Reserved Slot on the Server, that could be kept empty for Whitelisted people to join first - or simply let them move them to the front of a queue.