Enchanted Book Splitter 1.0 — Minecraft Java 1.21.1

Issues:
1. Prior version Alpha 0.3 created split books using minecraft:enchantments instead of minecraft:stored_enchantments, books would show tool-like effects (in the case of Efficiency) and could
not be applied normally in anvils.
2. Alpha 0.4 had an issue wherein already split books would not be fixed upon the update to the tag (from enchantments to stored_enchantments)

Fixes:
1. 1.0 now corrects enchanted books to be tagged as stored_enchantments
2. 1.0 automatically repairs those legacy split books when they exist as dropped items in the world. DOES NOT WORK FOR ITEMS IN INVENTORY

Note for self,
To repair pre-Alpha 0.3 split books:
1. Drop the broken enchanted book
2. Swap Alpha 0.4 with 1.0 in /datapacks and reload
3. 1.0 will convert minecraft:enchantments data into minecraft:stored_enchantments

Normal splitting:
- 2 enchantments require 1 blank book
- 3 require 2
- 4 require 3 etc.
- exact blank-book amount consumed
- normal/chipped/damaged anvils
- no XP removal
- no anvil damage
- anvil sound + particles
- enchantment levels preserved

After /reload should see
[Book Splitter V5] Loaded successfully
