Delta solo and curve adjustment of the built-in clipper.

I noticed that no hotkeys are assigned to this button (Ctrl + Left Mouse Button, for example). It simply switches between three modes. But I think we could make it a bit more user-friendly:

• If one of the two limiting modes is enabled, the "delta solo" function becomes available, allowing you to listen separately to the distortion introduced by the clipper. I suggest assigning this by clicking the icon with Alt + Left Mouse Button.

• While holding Shift + dragging with the Left Mouse Button up and down, the clipper curve will change, making it either softer or more aggressive. This can be indicated by a color gradient from red to violet and by updating the curve icon instead of using a static image. Consequently, only one mode will be needed instead of two.

This will make the final clipping more flexible and clean. The delta solo function is quite important for effects that can introduce significant distortion, such as a clipper.