Free Albums - Enable Add to Collection

[rann143]

Just like on Desktop, add a button for free albums that saves them to your collection.

See this file from the web repo for guidance: https://github.com/funmusicplace/mirlo/blob/7ac2f6b2973cb56e0eb11b22162a5f2f10a4095c/client/src/components/TrackGroup/AddToCollection.tsx#L12