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/TileMolecularAssembler.java

@@ -479,7 +479,7 @@ public class TileMolecularAssembler extends AENetworkInvTile implements IUpgrade
 				try
 				{
 					final TargetPoint where = new TargetPoint( this.world.provider.getDimension(), this.pos.getX(), this.pos.getY(), this.pos.getZ(), 32 );
-					final IAEItemStack item = AEItemStack.create( output );
+					final IAEItemStack item = AEItemStack.fromItemStack( output );
 					NetworkHandler.instance().sendToAllAround( new PacketAssemblerAnimation( this.pos, (byte) speed, item ), where );
 				}
 				catch( final IOException e )