[WIP] Global Shortcuts impl

[vaxerski]

ref: https://github.com/hyprwm/hyprland-protocols/pull/3

todo:

• [x] Test this, it's 100% untested
• [x] Hyprland impl
• [ ] After merge in hl-proto, fixup protocol sourcing
• [ ] Some battle testing, random crashes occur around wl_lists sometimes
• [x] Reading the description

[Aviana]

I watched your interview with Brodie and you were mentioning the lack of test applications. So just in case you didn't see it yet: https://github.com/mumble-voip/mumble/pull/5976

[vaxerski]

that's the one I used for testing this. My point in the interview was that no apps support it - and mumble still technically does not. That's a draft mr, lol

[vaxerski]

@fufexan meson complains about sumn plox fix