[Moonsu] Better GUI for Sophisticated Backpacks

Port to

• 1.21
• 1.21.1

Port to

• 1.20.4

Port to

• 1.20
• 1.20.1

Port to

• 1.19
• 1.19.1
• 1.19.2

Port to

• 1.18
• 1.18.1
• 1.18.2

Port to

• 1.20.4

CHANGELOG 1.1

• Necessary changes were made to make it work properly in these versions

Port to

• 1.16.3
• 1.16.4
• 1.16.5

Port to

• 1.18
• 1.18.1
• 1.18.2

Port to

• 1.19
• 1.19.1
• 1.19.2