Add PEI to 4.0

[MoltonMontro]

@ThatGuyYouDontKnow

I think it would be a shame to not have it in 4.0, in the same general layout. It could be modified the same way it was between 2.x and 3.x. I suggest PEI comes back, just simply upscaled with tweaking.

Imo this is the worst way to add PEI to Unturned II. Completely disregards enhanced gameplay.

I want the map, but nobody is going to play it if it’s the worst map in the game.