Add support for radio streams

Summary:
Add support for radio streams

Steps of development:

• play a stream and get some information from it
• Added a table for radios in the database (V13) with some examples in it.
• Get the examples in the view and add/play them in the playlist.

Test Plan: after the first reviews, add test for the radios view

Reviewers: Elisa, VDG, mgallien, astippich

Reviewed By: Elisa, mgallien, astippich

Subscribers: astippich, ngraham, mgallien, ndavis

Maniphest Tasks: T7567

Differential Revision: https://phabricator.kde.org/D21525