[Songs] New Songs window

[lourheroes]

Create a Songs window that can display a list of songs from a given ID (album, artist, playlist).
This window will be used to display songs list from the user collection.

Solution
The Songs window will work like the Playlists window.
Use the PebbleJS Menu window to create a window that display songs retrieved for a given collection ID from the Spotify API.

Additional context
Check if the Menu displaying songs list could be combined in an unique class.