[Feature Request] Add cli option to open Reader for a local file

[osbm]

Like this:

manga-tui read horimiya-jp-ch1.cbz

I mainly want this because Mangadex doesnt have japanese raws. Wouldnt it be cool?

[osbm]

I just saw the issue #13. Sorry about that. If one day another manga source that have japanese is added, that would be really awesome.

Cheers.