[FEATURE] Add freeplay smooth scrolling for touchpads

[mikolka9144]

Description

This PR adds smooth scrolling for freeplay cards on PC platforms. Noticeable when using touch pad on laptop to scroll through them.

Screenshots/Videos

after.webm

before.mp4

[EliteMasterEric]

So it looks like the idea behind this one is that it continuously increments the scroll as long as you continue doing it?

I'm going do more testing internally but this felt overly sensitive when I tested with an unlocked mouse wheel.

[mikolka9144]

So it looks like the idea behind this one is that it continuously increments the scroll as long as you continue doing it?

I'm going do more testing internally but this felt overly sensitive when I tested with an unlocked mouse wheel.

There is a high chance that it is. I tred to ajust the value in such way to keep standard mouse scrolling work as before.

I'll look into making a constant for scaling down fractal steps (steps not generated by the standard mouse). Maybe this could make it easier to calibrate

[mikolka9144]

@EliteMasterEric I added the constant for scaling the smooth scroll. The values I provided work good on my end, but you might suggest other that may work better.

[TechnikTil]

This PR has merge conflicts, please fix them!