Option to pause emulation via hotkey.

[levonnn]

Is your feature request related to a problem? Please describe. The only way to pause emulation is via menu. But the menu screen can't be hidden.

Describe the solution you'd like Simple pause button via hotkey, that freezes/unfreezes emulation. In other words, pause without menu covering the screen.

Describe alternatives you've considered Or maybe hiding menu as an option?