A global setting that changes default spawndistance of MonsterEvent

[A2ur3]

spawndistance = The distance at which the monsters are spawned. Defaults are, 8000px for caves, 5000 for ruins, and 3000 for wreck spawns. Ignored for all the other spawn types unless specified, meaning the monsters spawn when the event is triggered.

don't hardcode 8000, 5000 and 3000 there should be a setting that we can override so I don't need to manually adjust 300+ MonsterEvents
I'm making cave MonsterEvents 4000 spawndistance, ruin 1500, abysscave 8000, abyss 25000