chaos: mega-tnt and chunk exporter fixes

common-heimdall/src/main/kotlin/gay/pizza/foundation/heimdall/export/ExportedChunk.kt

@@ -4,6 +4,7 @@ import kotlinx.serialization.Serializable
 
 @Serializable
 data class ExportedChunk(
+  val blocks: List<ExportedBlock>,
   val x: Int,
   val z: Int,
   val sections: List<ExportedChunkSection>

common-heimdall/src/main/kotlin/gay/pizza/foundation/heimdall/export/ExportedChunkSection.kt

@@ -6,5 +6,5 @@ import kotlinx.serialization.Serializable
 data class ExportedChunkSection(
   val x: Int,
   val z: Int,
-  val blocks: List<ExportedBlock>
+  val blocks: List<Int>
 )