fun addArtwork(artwork: Artwork): Uri?
Add a new piece of artwork to the MuzeiArtProvider.
Return
The URI of the newly added artwork or null if the insert failed
fun addArtwork(artwork: Iterable<Artwork>): List<Uri>
Add multiple artwork as a batch operation to the MuzeiArtProvider.
Return
The URIs of the newly added artwork or an empty List if the insert failed.