#24 Improve browsing and exploration functionality

To become a complete alternative to the official app, Freezer still lacks a few of its small but essential features, which are also the de facto standard for all applications of this kind: * "Similar Artists" and "Playlists" tabs are really needed, because any streaming service today is not only about listening music, but also about discovering it. * Interactivity of the track title in the player: tap on the artist/composition name must redirect to the artist/album page respectively. * The same redirection should take place from any page where artist/composition/album name are presented. These may not be the most necessary features, but they really have kept me from switching to using Freezer since I first learned about it, despite the fact that otherwise it is a great app, which I have been waiting for years.