[Enhancement]: Add description to the Local Folders view

[nichwall]

Describe the Feature/Enhancement

To reduce confusion about what the "Local Folders" are for on Android, there should be some text explaining that the ABS app is only designed for playing media downloaded directly through the app, and the external storage is only there to allow other apps to access the downloaded media.

Why would this be helpful?

Reduces confusion about why local media is not being shown in ABS.

Future Implementation (Screenshot)

At the Blue line, insert text such as "Local Folders are only for allowing other media apps to access media downloaded through the ABS app. This app will not recognize or play media added to these local folders by other apps or by copying files into it."

Adding a link to https://www.audiobookshelf.org/guides/android_app_shared_storage

Audiobookshelf App Version

Android App - 0.9.79

Current Implementation (Screenshot)

No current implementation.