Add Arrow Persistent

src/de/steamwar/spectatesystem/listener/PlayerSeatListener.java

@@ -53,6 +53,7 @@ public class PlayerSeatListener extends BasicListener {
         arrow.setGravity(false);
         arrow.setPickupStatus(AbstractArrow.PickupStatus.DISALLOWED);
         arrow.addPassenger(event.getPlayer());
+        arrow.setPersistent(true);
     }
 
     @EventHandler