tl;dr; "Use Create ML to create an image classifier project. With Xcode open, Control-click the Xcode icon in the Dock and choose Open Developer Tool > Create ML. (Or, from the Xcode menu, choose Open Developer Tool > Create ML.)
In Create ML, choose File > New Project to see the list of model templates. Select Image Classification and click Next."
Hi!
It seems it was. Although, after reading the documentation of CreateML it seems it was replaced by more intuitive (and ready) tool so there's no need to create your own playground for that purpose. You can now use different tool. I've already checked it and works correctly.
Refer to the documentation here:
https://developer.apple.com/documentation/createml/creating_an_image_classifier_model