[2022] Add possibility to seat on chairs or sofas

Originally posted by {FU}TheForgeryTTV: It would be great if we could sit on chairs and sofas while eating and drinking for immersion to pass the time during night.

But I guess there's no time for that at all if you hear zombies trying to break down your door.

Well, the immersive thing to do during the night would be to lie down and sleep. If they were going to make furniture-using animations for immersion, they might as well go all the way with it.