[FR] Ability to add a note to a song

[ltguillaume]

Oftentimes it's really useful to add a note to a recognitized song:

• Add the movie/trailer/video/etc. the song was in
• Add the club/bar/cafe/etc. the song was played in
• Add who recommended the song
• Add any other relevation context

So it would be nice to have a Notes field for every recognition to add some custom info.