Toggle Mode and repeat feature for keyboard/joystick buttons

[rna98mod]

What should happen

when certain keyboard button pressed, it will stay pressing until user press the button again (just like toggle mode for speed). This feature already exist in combo setup for touch control, but the toggle mode option is not available in keyboard control.

Who would this benefit

it will be really helpful when playing a games that have aim gameplay (action games), user doesn't have to keep pressing the aim button while aiming.

Platform (if relevant)

Windows

Games this would be useful in

ULUS10109 - Miami Vice The Game, ULUS10563 - God Eater Burst

Other emulators or software with a similar feature

No response

Checklist

• [X] Check the latest git build in case it's already implemented.
• [X] Search for other requests of the same feature.

[hrydgard]

Got another feature request for this, so tagging it (and slightly renaming it)

It would be nice if we had more consistency about what features are available for touchscreen buttons vs actual direct controls.