v2.12.1-k2.3.21-3.0+neoforge

• Use NeoForge's net.neoforged.neoforge.internal.NeoForgeBindings instead of net.neoforged.fml.Bindings for lp <= 2.0
  • The Bindings class is no longer shipped with the latest version of 1.21.1 leading to a bug when registering events
  • fix #116
• Migrate to PreloadingTricks' relocated LexForgeManager for 2.0-forge-compat