coordinate version of `block()` not implemented

[ZeWaka]

This is a version of block() that takes direct coordinates instead of turf references. see: block(StartX,StartY,StartZ, EndX=StartX,EndY=StartY,EndZ=StartZ)

https://www.byond.com/docs/ref/#/proc/block

This might need handling in the compiler depending on implementation I think - unsure. Bonus points: rewrite the existing block() to not be in softcode