This adds the same high quality cursors on macOS as we have on Windows.
These are stored as 32*32 pt PDFs, same as the built-in OS cursors
Reviewed by: Brecht Van Lommel
Differential Revision: https://developer.blender.org/D5907
Using a capitalized app name fits the platform guidelines. Since macOS file
systems are case insensitive by default this should not break scripts that
assume lowercase.