Added comments to the structure registry

Had to scrap the litematic conversion because their code is so fucking ass ffs

Author: emyfops

common/src/main/kotlin/com/lambda/interaction/construction/StructureRegistry.kt

@@ -58,9 +58,11 @@ object StructureRegistry : ConcurrentHashMap<String, StructureTemplate>(), Loada
     private val serializers = mapOf(
         "nbt" to StructureTemplate::readNbtOrException,
         "schem" to StructureTemplate::readSpongeOrException,
-        "litematica" to StructureTemplate::readLitematicaOrException,
 
-        // Not supported, who could've guess that converting a format from 14 years ago would be hard? :clueless:
+        // Not supported due to the clusterfuck codebase of litematica and basically zero documentation
+        "litematic" to StructureTemplate::readLitematicaOrException,
+
+        // Not supported, who could've guess that converting a format from 15 years ago would be hard? :clueless:
         "schematic" to StructureTemplate::readSchematicOrException,
     )
 
@@ -134,7 +136,7 @@ object StructureRegistry : ConcurrentHashMap<String, StructureTemplate>(), Loada
             // Verify the structure integrity after it had been
             // converted to a regular structure template
             if (compound.isValidStructureTemplate()) template
-            else throw IllegalStateException("Corrupted structure file: ${path.pathString}")
+            else throw IllegalStateException("Corrupted structure file ${path.pathString}")
         }
 
     /**

common/src/main/kotlin/com/lambda/util/extension/Structures.kt

@@ -155,6 +155,4 @@ private fun StructureTemplate.readSpongeV3OrException(
 fun StructureTemplate.readLitematicaOrException(
     lookup: RegistryEntryLookup<Block>,
     nbt: NbtCompound,
-): Throwable {
-    return IllegalStateException("Litematica parsing is not implemented")
-}
+): Throwable = NotImplementedError("Litematica is not supported, you can help by contributing to the project")