feat: enable scaling mouse-scroll-multiplier for both precision and discrete scrolling (#8927)

Resolves Issue: #8670 

Now precision and discrete scrolling can be scaled independently.
Supports following configuration,

```code
# Apply everywhere
mouse-scroll-multiplier = 3

# Apply separately
mouse-scroll-multiplier = precision:0.1,discrete:3 (default)

# Also it's order agnostic
mouse-scroll-multiplier = discrete:3,precision:2

# Apply one, default other
mouse-scroll-multiplier = precision:2
```

The default precision value is set 0.1, as it felt natural to me at
least on my track-pad. I've also set the min clamp value precision to
0.1 as 0.01 felt kind of useless to me but I'm unsure.

0 files changed, 0 insertions, 0 deletions