KOreader support

Hi, thanks a lot for the amazing updates and features that you've been adding to Papyrix! Been enjoying using it a lot on my X4.

I was wondering if there is a plan to integrate KOreader progress sync in Papyrix? Crosspoint recently integrated it, and it's a game changer for my workflow, but I don't want to switch as I still want the dark mode and image support that Papyrix has.