Add RecordManager

BauSystem_Main/src/de/steamwar/bausystem/tracernew/recorder/RecordManager.java

@@ -13,6 +13,10 @@ import static de.steamwar.bausystem.tracernew.recorder.TNTRecorder.*;
 
 public class RecordManager {
 
+    private RecordManager() {
+        throw new IllegalStateException("Utility class");
+    }
+
     public static void recordCommands(Player player, String[] args) {
         switch (args[0].toLowerCase()) {
             case "start":