Add contextual menu for a track

[jyntran]

While on a track, pressing the select button will open a menu:

• Suggestion would be to use the Pebble action bar layer: https://web.archive.org/web/20161207160503/https://developer.pebble.com/guides/design-and-interaction/recommended/#execute-actions-with-an-actionbarlayer
• Or the Pebble action menu: https://web.archive.org/web/20161207160503/https://developer.pebble.com/guides/design-and-interaction/recommended/#allow-extended-options-with-an-action-menu

Features that may appear in this menu could include

• the ability to love/unlove a track
• the ability to view the listener and play count for a track