Add support for Manga

[bpepple]

Is your feature request related to a problem?
Currently, Metron only supports US published comics, and it would be nice to add support for Manga.

Differences to take into account
Manga is read from right to left and is in black and white 99 percent of the time.
The rest is basically the same between manga and comics except for the naming convention which us as follows.

Issues in comics translate to chapters in manga which unlike comics are bundled in various magazines like weekly shonen jump which bundle in various chapters of different manga every week and they are not released standalone like comics physically ( they might be released as standalone digitally but it depends )

TPB's are Volumes in manga and are the things that are translated and released in the west.

Hard covers/Compendium more so translate to Omnibus in manga and is more so a practice of publishers translating multiple volumes from japan into 1 volume in west instead of keeping them as seperate (this might be due to various factors such trying to release them quicker if they way behind the volumes that are released in japan.) And not something that happens in japan itself afaik.

Origianl Matrix Message

Will also need to look into adding country codes & international price support.

[jfml]

Would love this, one question is if it should be somehow distinguish between (illegal) scanlations and official (digital and printed) licences?