Redirect for Spotify ruma kobelobster

This is just a first version for Spotify.

It supports redirecting links from open.spotify.com to your desktop app if they are

* an album
* a playllist
* a podcast
* a user
* an artist
* a song

Currently not supported is:

* Error handling
* Opening links while navigating spotify web ui. Currently requires reload of page

------

Licensing

Icon copyright by PINPOINT.WORLD from https://www.iconfinder.com/icons/4418005/redirect_refocuse_reorientate_repurpose_reroute_shift_switch_icon under license https://creativecommons.org/licenses/by/3.0/


Icon is taken from here https://www.iconfinder.com/icons/4418005/redirect_refocuse_reorientate_repurpose_reroute_shift_switch_icon using