More Armor Stand Variants (MStV+)

1.1.0:

• Implement 'Pick Block'-functionality returning the correct variant when middle-clicking an Armor Stand in Creative Mode
• 1.21.2, 1.21.3: Update to 1.21.2, 1.21.3

1.0.1:

• 1.20.1, 1.20.4: Correct Java version from 21 to 17