[ARDAudiothekBridge] added bridge ARDAudiothek.de (#3132)
[ARDAudiothekBridge] added bridge ARDAudiothek.de (#3132)

* [ARDAudiothekBridge] added bridge ARDAudiothek.de

ARD, the union of Germany's regional public-service broadcasters, operates a video and an audio streaming service. The video streaming service is ARDMediathek, for which a bridge already exists. The audio streaming service is ARDAudiothek. This commit adds initial support for ARDAudiothek. It currently supports turning shows to feeds.

* [ARDAudiothekBridge]  fixed code style

Sorry. Forgot spaces surrounding the concatenation symbol
ORelio/rss-bridge,Riduidel/rss-bridge,RSS-Bridge/rss-bridge,RSS-Bridge/rss-bridge,RSS-Bridge/rss-bridge,Riduidel/rss-bridge,Riduidel/rss-bridge,ORelio/rss-bridge,ORelio/rss-bridge