Option to still add comic if page discovery fails

[jackv24]

Is your feature request related to a problem? Please describe.
Currently when a comic website isn't supported (can't find the page list) it can't be added at all.

Describe the solution you'd like
When comic importing fails the comic should still be added, but it could display an alternate list with a short history of visited pages for the site instead. This would allow a basic level of tracking without needing to support every website, as a backup solution for unsupported sites.

Describe alternatives you've considered
The perfect solution is to support every website, but in the meantime this could be a good backup.

[jackv24]

Partially implemented here https://github.com/jackv24/ComicWrap/tree/ComicWrap-32, but will require extra work to handle the webview's erratic navigation events