Resource Backpack's

v2.0.0

• port to 26.1
• remove ability to place backpacks inside backpacks, destroyed the whole balancing
• change order of backpack progress, iron and gold switching places
• shulkerboxes can be placed in all types of backpacks
• changing recipes to balance backpacks against shulker boxes
  • gold needs 2 shulker shells
  • diamond needs 4 shulker shells
  • netherite need 2 shuhlker boxes
• Backpacks now save custom names properly and show that name when opened from inventory and when placed