[Feature] New Registry for Surface Rules

src/main/resources/bclib.accesswidener

@@ -10,6 +10,7 @@ accessible	class	net/minecraft/world/level/levelgen/SurfaceRules$LazyCondition
 accessible	class	net/minecraft/world/level/levelgen/SurfaceRules$SequenceRuleSource
 accessible  class   net/minecraft/world/level/levelgen/presets/WorldPresets$Bootstrap
 extendable  class   net/minecraft/world/level/levelgen/NoiseBasedChunkGenerator
+accessible  class   net/minecraft/data/BuiltinRegistries$RegistryBootstrap
 
 #Methods
 accessible method net/minecraft/client/gui/screens/worldselection/WorldGenSettingsComponent updateSettings (Lnet/minecraft/client/gui/screens/worldselection/WorldCreationContext$Updater;)V

src/main/resources/data/worlds_together/worldgen/surface_rules/empty.json

@@ -0,0 +1,6 @@
+{
+  "type": "minecraft:block",
+  "result_state": {
+    "Name": "minecraft:dead_fire_coral_block"
+  }
+}

src/main/resources/together.mixins.common.json

@@ -4,9 +4,11 @@
   "package": "org.betterx.worlds.together.mixin.common",
   "compatibilityLevel": "JAVA_17",
   "mixins": [
+    "BuiltinRegistriesMixin",
     "DiggerItemAccessor",
     "MainMixin",
     "PrimaryLevelDataMixin",
+    "RegistryAccessMixin",
     "RegistryOpsAccessor",
     "TagLoaderMixin",
     "WorldGenPropertiesMixin",