Keep Inventory Orbs

Additions:

• Added 1.21.6 & 1.21.7 support
• Added 1.21.6+ menu support
• Added /function #keep_inventory_orbs:menu function tag to open menu
• Added 'Orb Stealing' capability & menu option
• Added a Load Message including datapack version

Changes:

• Increased collect distance to 6 blocks

Bugs Fixed:

• Malformed JSON to check the minecraft version