[Request] Add Audiobookshelf

• The app complies with the inclusion criteria as listed in the README
• The app is not already listed in the repo or issue tracker

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Link to the source code:

https://github.com/advplyr/audiobookshelf-app

Link to app in another app store:

https://play.google.com/store/apps/details?id=com.audiobookshelf.app&hl=en_US&gl=US

License used:

GPL-3.0

Category:

Multimedia

Summary:

The official Android client for the self-hosted audiobook and podcast server Audiobookshelf.

Description:

For use with your audiobookshelf server. Audiobookshelf is a free and open source audiobook and podcast manager.

Connect to your self-hosted audiobookshelf server and stream your audiobooks and podcasts directly to your device.