Document ComicInfo.xml usage for local source

[arkon]

Acknowledgements

• [X] I have searched the existing issues and this is a new ticket, NOT a duplicate or related to another open issue.
• [X] I have written a short but informative title.
• [X] I will fill out all of the requested information in this form.

Describe your suggested feature

https://anansi-project.github.io/docs/comicinfo/documentation

Also see https://github.com/tachiyomiorg/tachiyomi/issues/8549

Other details

No response

[SicOverflow]

谢谢，😍