Add Radios.cz

Nice online radio after a long long time...

dotfiles/bmo/wish.ini

     ma      = http://www.mapy.cz/
     mbr     = https://musicbrainz.org/
     mfp     = http://musicforprogramming.net/
+    radios  = http://www.radios.cz/
     rdt     = https://www.reddit.com/subreddits/
     so      = https://stackoverflow.com/
     tjc     = https://together.jolla.com/