add iconset to material dump

Author: htmlcsjs

src/main/java/net/htmlcsjs/htmlTech/common/command/CommandDumpMaterials.java

@@ -42,6 +42,7 @@ public void execute(MinecraftServer server, ICommandSender sender, String[] args
             materialData.put("blast_temp", material.getBlastTemperature());
             materialData.put("formula", material.getChemicalFormula());
             materialData.put("mass", material.getMass());
+            materialData.put("icon_set", material.getMaterialIconSet().getName());
 
             // material properties stuff
             Map<String, Object> propertiesMap = new HashMap<>();