Re-wrote washing_machine item dying system

Turned the dying process into a proc and implemented a variable on clothing to facilitate the proc. This should make it significantly easier to further expand the dyable items.
Moved the dying proc call into the same loop as cleaning blood. May add Tanning to this loop later as well if it is deemed more efficient.

Due to the re-write, this will need to get merged quickly if it is approved so other additions to the various clothing files can be added without merge conflicts.