Fuji (Essentials)

The version number of fuji follows semver now: https://semver.org/

cherry-pick the v4.3.0 version for mc1.21:

• feature: add on_warped event for warps. (command_toolbox.warp module)
• fix: possible to trigger Not a JSON Object: null when a new fake-player is spawned via carpet mod. (placeholder module)
• fix: can't display a specific type of block entity properly, e.g. beds, banners etc. (chunks module)
• refactor: cleanup unused functions in core, rename and simplify symbols in core.