Keep Head Names

This will probably be the final version of this mod as MC-174496 has been fixed!

There is little reason to still use this mod, except to:

• ensure that placed heads keep their names when upgrading your world to 1.20.5
  To upgrade your world, make a backup, then run "Optimize World". Once your world is upgraded, the mod isn't needed anymore.

• keep item_name, lore and custom_data components
  (note: this part is just a datapack you can build yourself!)