[Issue/Suggestion] Add a 'breakCount' value to the miner AI

[Dillsfawn]

Larger creatures(like the Polar Bear) have problems getting through holes mined into walls. Likely because their hitbox is larger than the holes dug, requiring multiple blocks to be broken to create an adequately large hole for them to pass. This can become a problem if more than one creature is trying to dig through the same spot. their large hitbox pushes each other away from the wall block they are trying to dig, or away from the hole they are trying to enter.

Being able to set how many blocks are broke each time the mining triggers would allow invasion developers to custom set the width of the holes dug for each creature. big holes for big creatures, small holes for small creatures.

Also, if at all possible the pathing to choose where to dig a hole should account for if there are already other creatures digging there.