add fluid level emitter

src/main/java/com/glodblock/github/loader/ItemAndBlockHolder.java

@@ -25,6 +25,7 @@ public class ItemAndBlockHolder {
     public static ItemPartFluidInterface FLUID_INTERFACE = new ItemPartFluidInterface().register();
     public static ItemFluidImportBus FLUID_IMPORT_BUS = new ItemFluidImportBus().register();
     public static ItemFluidExportBus FLUID_EXPORT_BUS = new ItemFluidExportBus().register();
+    public static ItemFluidLevelEmitter FLUID_LEVEL_EMITTER = new ItemFluidLevelEmitter().register();
     public static ItemFluidPacket PACKET = new ItemFluidPacket().register();
     public static ItemBasicFluidStorageCell CELL1K = new ItemBasicFluidStorageCell(CellType.Cell1kPart, 1).register();
     public static ItemBasicFluidStorageCell CELL4K = new ItemBasicFluidStorageCell(CellType.Cell4kPart, 4).register();