[Feature Request] Add scrolling option to RTL and LTR Reader Mode

[Yashirow]

What feature should be added to Tachidesk-JUI?

Add an option that could let the user scroll for changing pages in RTL and LTR Reader Mode (e.g. scroll down -> next page, scroll up -> previous page).

Why/Project's Benefit/Existing Problem

RTL and LTR mode are great for focusing on one page at the time but clicking each time is less convenient than scrolling. Since some people would still rather use mouse click instead of scrolling, adding an option for it instead of replacing it completely could be a good thing.