Minecraft 1.20.6 Update

[minoneer]

Update for Minecraft/Spigot/Paper 1.20.6

Vanilla-Minecraft changes how items are stored and specified in 1.20.5. Since items are a central part of uSkyBlock, it requires extensive changes.

• All item parsing has been changed from NBT-Tags to Item Components
• The format in which items are specified in config files has changed. It now uses the same format as the vanilla /give command, which
• Default challenges.yml, config.yml, and other configs have been updated to the new format
• All existing configs, including ones with customized challenges and items will be automatically converted to the new format. Exception: item meta will not be automatically converted to tags, as there is no stable way to do so. It will require manual upgrade by the use. Even the paper online tool does not properly convert to valid item tags.
• Lots of code cleanup, including the removal of old numeric item ID stuff
• The new system relies exclusively on Bukkit API and therefore no longer needs reflection to access internal implementations. This should make future updates much simpler.

This PR depends on #54 - once that is merged, the diff should become a lot cleaner and more readable.

[minoneer]

@Muspah I have marked this as a draft for now - it would be great to get a second pair of eyes on this, as the changes are involved.

I tested it on our local setup, and everything looks good, but testing on another independent setup would be good.

Diff of the actual update: https://github.com/minoneer/uSkyBlock/compare/a1742af344c8acc2e2b989503e99d9c0fdc36657...minoneer:uSkyBlock:minecraft-1.20.6

[minoneer]

Rebased onto bukkit-utils merge in master