Refactored StorageChannel enum into an interface (#3138)

This replaces the static enum with a more dynamic interface providing
factory methods for handling network storage.

src/main/java/appeng/tile/crafting/TileCraftingMonitorTile.java

@@ -58,7 +58,7 @@ public class TileCraftingMonitorTile extends TileCraftingTile implements IColora
 
 		if( hasItem )
 		{
-			this.dspPlay = AEItemStack.loadItemStackFromPacket( data );
+			this.dspPlay = AEItemStack.fromPacket( data );
 		}
 		else
 		{