Set facing direction with block utils

[HexedHero]

Add a facing direction for each blockWithX method to set the facing direction instead of always south.

[deanveloper]

I don't think I'll do this, as it wouldn't be clear how things like block updates would be handled. This library is meant to simply be a safe and semi-portable library for operations that are typically considered unsafe, and there is already a safe way to set the rotation of a player skull with Skull Block Data.