I am following alone with this tutorial to build my first Swift app: https://www.youtube.com/watch?v=XRRS3xJnKBQ
As you can see above, at 6:21, they make some changes to SceneDelegate.swift.
This file was not created in the tutorial. And in my fresh XCode project, that file does not exist.
The tutorial is 2 years old, so I'm wondering if Swift itself has changed since then or if I need to create that SceneDelegate.swift file.