[REQ] Global hotkey for battery charge popup

[StegBrind]

Is your feature request related to a problem? Please describe. Every time I want to check my earbuds' battery charge, I always have to press Alt+Tab on Windows or WinKey on Gnome Linux to actually check it (see the window).

Describe the solution you'd like I guess it'd be way more convenient to have a configurable global hotkey to trigger the battery charge popup window and be able to easily check the information about your battery. We just need a cross-platform way to capture pressed and released keys globally. There is a great library called "libuiohook" written in C and with a C# wrapper for it. I can implement it myself and make a PR if you are positive on my feature request.

Describe alternatives you've considered We need to make an implementation for the global hotkey handler. Do you think we'd better to extend the IHotkeyReceiver interface, or just create a separate one just for this small feature?

Additional context Thank you for your efforts, really useful application!