Traveler's Backpack

✨ Added compat with Universal Graves

✨ Added allowedAbilities config option - defines list of all backpacks that can have ability

🔧 Changed backpack tier upgrades description to match new smithing table mechanics

🔧 Fluids in backpack tanks respect getColor(FluidVariant) method for all fluids instead of potion only

🐛 Fixed backpack not dropping if destroyed by other source instead of player

🐛 Fixed Traveler's Backpack Potion fluid incorrect color and name