Created attachment 156679 [details]
slider with a manual number input

SUMMARY
In the mouse configuration UI (with libinput), there is a slider to set the pointer speed. I have found this slider to not be precise enough every time I use it.

The touchpad configuration UI has such a slider, but also has a "manual number input" (not sure how to call it, see attachment) next to it, to allow users to have a precise value

My wish would be to have such a thing next to the pointer speed slider.

STEPS TO REPRODUCE
- Open system settings
- navigate to Hardware -> Input devices -> Mouse
- notice the slider without manual input available
- navigate to Hardware -> Input devices -> Touchpad
- notice the slider with manual input next to it

SOFTWARE/OS VERSIONS
Linux: 5.15.93-1-lts x86_64
KDE Plasma Version: 5.26.5
KDE Frameworks Version: 5.103.0
Qt Version: 5.15.8

ADDITIONAL INFORMATION

I'm willing to submit a patch for this, I'm mostly here to seek approval to start working on it