A little bit of polishing!

• Added a sound for when the statue gets an item.
• Updated statue comparator output.
  • When holding an item, the comparator will only output when powered off.
  • When not holding an item, the comparator will always output.
• Added a tag list for non-solid blocks the statue can be placed on.
  • By default, this only contains the hopper.

Bug fixes!

• Hoppers could insert stacks with sizes more than 1.
• Hoppers wouldn't visually update the statue.