Added tabBox config to kwin module

[JustScreaMy]

Hello, I've just started using this and noticed a few missing options for configuring how the Task Switcher behaves.

I had some uncertainty around naming the configuration options and ran into a couple of issues with handling options that use 0/1 values (to represent different modes) instead of simple true/false booleans.

Just to explain my thought process behind handling includeShowDesktop and sortMode differently, I think that it is more likely that a new Sorting order would be added than they add more ShowDesktopModes.

Looking forward to any feedback and suggestions on how to improve the clarity and usability of these configuration options.

[HeitorAugustoLN]

I will review this soon.