Major update to make Dual Swords work in 1.21 Minecraft.

Additions

• New tags control the special rendering of parry and lunge.
• Several new enchantment components have been created, making simpler off-hand effects possible through datapacks.

Changes

• Every enchantment has been converted into the new data-driven system.
• The sweeping particles from Lunge have been condensed to appear more tightly around the player.
• The specialised grouping system of offhand enchantment has been removed due to exclusive sets being only tags.