Build 1 for 1.21.8

• Updated to 1.21.8

Build 2 for 1.21.3

• Fix ForgingSlotManager nested classes
• Add anon class mappings

Build 1 for 1.21.3

• Added Registries.MENU, RegistryKeys.MENU and a bunch of new classes
• Moved slot classes into net.minecraft.menu.slot

Build 1 for 1.19.3

1.19.3+1

- Move ServerPlayerEntity.onMenuClosed to PlayerEntity

Build 1 for 1.18.1

1.18.1+1

- Add Registry.MENU
- Add name for ServerPlayerEntity.onMenuOpened

Build 3 for 1.17.1

1.17.1+3

Constructor stuff

Build 2 for 1.17.1

Removed class mappings for anonymous classes.

Build 1 for 1.17.1

• Added new stuff in ServerPlayerEntity:
  • field menuSyncHandler
  • field menuListener
  • parameter menu in method_14235
• Added LecternScreen.getMenu
• Added SimpleNamedMenuFactory
• Added MenuSyncHandler

Build 5 for 20w15a

Fixed missing parent classes for nested classes (only affected CreativeInventoryScreen).

Build 4 for 20w15a

Fixed multiline comments.