Revert "Remove DvdLib (#9068)"

This reverts commit db1913b08f.

MediaBrowser.Controller/MediaEncoding/IMediaEncoder.cs

@@ -187,5 +187,13 @@ namespace MediaBrowser.Controller.MediaEncoding
         /// <param name="path">The path.</param>
         /// <param name="pathType">The type of path.</param>
         void UpdateEncoderPath(string path, string pathType);
+
+        /// <summary>
+        /// Gets the primary playlist of .vob files.
+        /// </summary>
+        /// <param name="path">The to the .vob files.</param>
+        /// <param name="titleNumber">The title number to start with.</param>
+        /// <returns>A playlist.</returns>
+        IEnumerable<string> GetPrimaryPlaylistVobFiles(string path, uint? titleNumber);
     }
 }