[Linux] Highly sensitive touchpad scrolling fix for Wayland!

Been tinkering with alot of parameters in about:config, but I finally a viable solution:

We all know that changing mousewheel.default.delta_multiplier_Any particular Axis values changes the minimum number of lines being scrolled

But what this does not change is the sensitivity of the smallest "fling" gesture when scrolling with a touchpad.

Here's the values you want to alter when trying make the scrolling feel more "tighter" or more "Windows like" or to fix the issue described above:

set apz.fling_friction 0.002 --> 0.005

apz.fling_min_velocity_threshold 0.5 --> 1.5

the above will make the smooth scrolling with touchpad actually feel smooth and in control. As opposed to simply changing the delta multiplier values.