run some AppRTCAudioManager actions on main thread

...a/eu/siacs/conversations/services/AppRTCAudioManager.java

.../siacs/conversations/services/AppRTCBluetoothManager.java

...u/siacs/conversations/services/AppRTCProximitySensor.java

...java/eu/siacs/conversations/services/CallIntegration.java

...versations/services/CallIntegrationConnectionService.java

.../siacs/conversations/xmpp/jingle/JingleRtpConnection.java

...ava/eu/siacs/conversations/xmpp/jingle/WebRTCWrapper.java