add part version of fluid interface

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

@@ -12,6 +12,7 @@ public class ItemAndBlockHolder {
     public static ItemFluidDrop DROP = new ItemFluidDrop().register();
     public static ItemFluidEncodedPattern PATTERN = new ItemFluidEncodedPattern().register();
     public static ItemPartFluidPatternTerminal FLUID_TERMINAL = new ItemPartFluidPatternTerminal().register();
+    public static ItemPartFluidInterface FLUID_INTERFACE = new ItemPartFluidInterface().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();