Reworked IO Port to handle StorageChannels better. (#3284)

* Reworked IO Port to handle custom StorageChannels in a better way.
* Added a transferFactor to `IStorageChannel` to allow addons to speedup the IO Port to transfer faster. E.g. 1000 mB fluid as fast as transfering 1 bucket (item) per operation, not just 1 mB. 
* Also some changes to avoid moving fluids being 1000x as energy expensive as items.

src/main/java/appeng/core/api/ApiStorage.java

@@ -160,6 +160,12 @@ public class ApiStorage implements IStorageHelper
 	private static final class FluidStorageChannel implements IFluidStorageChannel
 	{
 
+		@Override
+		public int transferFactor()
+		{
+			return 1000;
+		}
+
 		@Override
 		public IItemList<IAEFluidStack> createList()
 		{
@@ -195,7 +201,7 @@ public class ApiStorage implements IStorageHelper
 			Preconditions.checkNotNull( request );
 			Preconditions.checkNotNull( src );
 
-			return null;
+			return Platform.poweredExtraction( energy, cell, request, src );
 		}
 
 		@Override
@@ -206,7 +212,7 @@ public class ApiStorage implements IStorageHelper
 			Preconditions.checkNotNull( input );
 			Preconditions.checkNotNull( src );
 
-			return input;
+			return Platform.poweredInsert( energy, cell, input, src );
 		}
 	}