Add skull texture support

[Hellcode48]

Since I will not be using resource packs, I would love to use Skull Textures for the Slots, Items, and Backpacks

Example on Skull Texture Ids (say I wanted a arrow for a Slot icon or rune): eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvODE2ZWEzNGE2YTZlYzVjMDUxZTY5MzJmMWM0NzFiNzAxMmIyOThkMzhkMTc5ZjFiNDg3YzQxM2Y1MTk1OWNkNCJ9fX0=

[osipxd]

What is it?

[Hellcode48]

that ID when used properly will give an SKULL:3 a custom texture depending on the ID used

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[osipxd]

Keep it