[enhancement] keyboard combo hotkeys/buttons

[mcross829]

I think a cool feature would be some buttons above the on-screen keyboard for common keyboard combos (alt + enter, shift + tab, etc.).

Hotkeys for keyboard combos would also be cool, like moonlight-nx, but I would really love on-screen buttons for them.

[XITRIX]

I’d like to create customizable keyboards, so anyone could create a layout for himself, on any language or with different amount of buttons, adding combo keys type of button is a good idea for it