Variable for steam in-game IP

[Jewlander]

Something similar to NightBot's current steam variable to pull your current server IP address and port, if I have that I wouldn't need to use NightBot at all.

Here's their steam variable's current functionality (the (gameServer) formatted string): https://docs.nightbot.tv/commands/variables/steam

This is really the only feature I've needed as of late, if it got in that'd be perfect!