plugins.ard_mediathek: Use generators instead of dicts.
plugins.ard_mediathek: Use generators instead of dicts.

ethanhlc/streamlink,streamlink/streamlink,gtmanfred/livestreamer,chrippa/livestreamer,programming086/livestreamer,bastimeyer/streamlink,Saturn/livestreamer,lyhiving/livestreamer,Dobatymo/livestreamer,Klaudit/livestreamer,Masaz-/livestreamer,blxd/livestreamer,beardypig/streamlink,streamlink/streamlink,back-to/streamlink,ethanhlc/streamlink,okaywit/livestreamer,gravyboat/streamlink,Masaz-/livestreamer,charmander/livestreamer,hmit/livestreamer,chhe/livestreamer,jtsymon/livestreamer,mmetak/streamlink,chhe/livestreamer,Dobatymo/livestreamer,charmander/livestreamer,Feverqwe/livestreamer,chrippa/livestreamer,Saturn/livestreamer,jtsymon/livestreamer,gtmanfred/livestreamer,chhe/streamlink,sbstp/streamlink,lyhiving/livestreamer,wlerin/streamlink,derrod/livestreamer,intact/livestreamer,fishscene/streamlink,flijloku/livestreamer,javiercantero/streamlink,wolftankk/livestreamer,blxd/livestreamer,mmetak/streamlink,hmit/livestreamer,back-to/streamlink,javiercantero/streamlink,beardypig/streamlink,okaywit/livestreamer,Feverqwe/livestreamer,flijloku/livestreamer,sbstp/streamlink,Klaudit/livestreamer,caorong/livestreamer,chhe/streamlink,fishscene/streamlink,wlerin/streamlink,wolftankk/livestreamer,bastimeyer/streamlink,gravyboat/streamlink,caorong/livestreamer,derrod/livestreamer,melmorabity/streamlink,melmorabity/streamlink,intact/livestreamer,programming086/livestreamer