Wheelbarrow Update

New Features

🎨 3D Item Rendering

• Items stored in the wheelbarrow are now visible in 3D.
• Visual representation shows stacked items based on quantity.

🎒 Auto Item Pickup

• Wheelbarrows now automatically collect nearby dropped items (both block and entity forms).
• Items are picked up within a 1-block radius.

💥 Explosion Protection

• Wheelbarrows are now immune to explosions (both block and entity forms).
• Can only be destroyed by players breaking them manually.