Add reconnect to airplay config

[pawelka]

Is it possible to add this parameter to airplay config? It will allow to switch streaming device. Right now, when owntone streams and I want to stream something else from iphone it will reconnect after few second and I cannot play nothing from iphone since I'll explicitly stop owntone stream.

[a-marcel]

Added reconnect to the newly provide beta. If you like, please test. Thanks