SimpleJsonVillagerTrades

Update to 1.20-pre1

Fixed an issue requiring ARRP to be present.

• Update to 1.19+pre3
• Improved codec handling
• Add sjvt:type_aware factory type

Update to 1.19

• Update to MC1.18.2
• Added sjvt:build command to export the hardcoded map (including other mods) to a datapack file
• Refactored:
  • Now using codecs for serialization/deserialization
  • Better support for other mods to create custom trade offers
• Now includes exported vanilla trades in the testmod! (https://github.com/aws404/SimpleJsonVillagerTrades/tree/1.18/src/testmod/resources/data/minecraft/trade_offers)
• Breaking change: minecraft:sell_map factory type now uses a feature tag and requires a item translation key (https://github.com/aws404/SimpleJsonVillagerTrades/wiki/Trade-Offer-Factory-Types#minecraftsell_map)

• Fix swapped argument names (price and count) in the minecraft:sell_item factory.