load song comment (#1604)

ErsatzTV.Infrastructure/Metadata/LocalStatisticsProvider.cs

@@ -97,6 +97,11 @@ public class LocalStatisticsProvider : ILocalStatisticsProvider
                 result.Add(new SongTag(MetadataSongTag.Title, song.Tag.Title));
             }
 
+            if (!string.IsNullOrWhiteSpace(song.Tag.Comment))
+            {
+                result.Add(new SongTag(MetadataSongTag.Comment, song.Tag.Comment));
+            }
+            
             // track
             result.Add(new SongTag(MetadataSongTag.Track, song.Tag.Track.ToString(CultureInfo.InvariantCulture)));