[Feature Request] Popup on changing the set

**Is your feature request related to a problem? Please describe.**

There is no indication on which set is active when I change them. Controllers already have few keys, so changing presets should only occupy one button, but this means that I always need to remember the set I'm in, or I'll loose orientation.

**Describe the solution you'd like**

Some kind of popup or notification (that works in fullscreen as well) and shows the number/name of the set that was changed to, potentially using a normal notification on, or such a screen popup like for display brightness, volume and such on ubuntu.

**Describe alternatives you've considered**

I thought about doing it myself, but frankly, I would either break something or not do it properly. Don't get me wrong, I'm not tech-illiterate (if I were, I wouldn't be using Linux), but I have other stuff that demands my attention

**Additional context**