-removed some of the clipping for zombies so they can move without bunching up inn tight spaces

updates-
-fixed the death barrier
-added a fence to spawn to show where the edge is
-added more spawns in the back garden, specifically the pool. so its not an easy camp
-added buyable ending
-added clips on spiral staircase
-fixed SOME zombie pathing bugs
-changed teleport location for crawl space

-removed useless triggers