Smooth Scrolling support?

[ranenvious]

Would it be feasible to add smooth scrolling? I took a peek at the dependencies and code and it looks like this program uses a QT scroll widget (at least that's what I'm assuming what it is because a lot of the names are things like Qscroll or QGraphicsView, etc.) which should have smooth scrolling built in from what I can tell online, but in mangareader it's still lock-stepped.

I haven't programmed with Qt before, but I glanced at some of your code for parts that seemed relevant and glanced at some documentation and I think it should be easy to add but I might be missing something. (again, zero experience with writing in Qt)

I looked at https://doc.qt.io/qt-5.15/qt.html#ApplicationAttribute-enum for all mentions of scrolling and found https://doc.qt.io/qt-5.15/qt.html#ScrollPhase-enum which, while I can't find any explanations for scrollphase online, looks like it might be for smooth scrolling.

[g-fb]

https://github.com/g-fb/mangareader#status