Ignore metadata derived from filename when matching individual songs

When matching individual songs instead of complete releases SongKong uses both metadata derived from the filename and the acoustid to try and identify songs. Sometimes a single acoustid can match multiple songs so this additional metadata helps SongKong pick the correct song. If the song has no song title SongKong tries to derive the song title from the filename but if you know the filename does not represent the song title it can be ignored by enabling this option.