[Feature request] MOBI support

[Destroy666x]

Great software, but 2 quite commonly used extensions are missing: SVG (already has an issue) and MOBI, one of 3 most popular ebooks formats, at least in my country.

Please add MOBI support, similar to EPUB or CBZ.

[Xanashi]

Unlike CBZ and EPUB which are both zip-based formats, MOBI is a proprietary format, that requires Icaros to use an additional third-party library to decode the format.
So it's a larger task, and depending on the size and license of the library, I may have to create a separate module that isn't included in the default Icaros installation.

With that said, I'll take a look at the format, when I have the time. It's just not top priority right now.