MacOS: look into using the "new" full screen mode

[mikaeleiman]

It looks like it's using the "old" type of full screen mode, but it'd be better if it used the new full screen mode where each full screen application gets its own virtual desktop. Easier to use it alongside other applications that way.

I don't know how this is done, but maybe https://developer.apple.com/documentation/appkit/nswindow/1419527-togglefullscreen?language=objc and https://developer.apple.com/design/human-interface-guidelines/macos/app-architecture/fullscreen-mode/ could be of use.

[jdryg]

Thanks for the suggestion.

Currently using GLFW 3.2.1 on all platforms. I'll check if this is actually possible with the current version. If not I'll wait for v3.3 to see if it'll be supported. On their site the progress for 3.3 is at 97% so it should be almost ready.