KubeJS 1.9.1 -> 2.0.0

Completely rewritten for Minecraft 1.21.1

• Everything in a JEIPlugin redirected to KubeJS via events
• Custom JEI category
• Events for "denying" categories and recipes. By filtering them early, instead of hiding them after everything is loaded, almost all related computations can be eliminated.
• Helpers for creating compound IDrawables, entity rendering, and custom tick timer
• /kube_jei reload command shortcut for reloading KubeJS & JEI