Updated the camerabin2 based camera with QtMultimedia changes

Moved it to the separate plugin as the rest of gstreamer based services;
Updated with libqgsttools_p changes;
Implemented QMediaRecorder::status property;
Made gst_photography dependency optional,
it's not always available on desktop;
Added video recording case to auto integration test;
Moved backend implementation into qt namespace

Task-number: QTBUG-26046
Change-Id: Iacfc1a6e263a4c0201d5eb28d04c960b87a230c0
Reviewed-by: Michael Goddard <michael.goddard@nokia.com>

src/plugins/gstreamer/camerabin/camerabinservice.h

@@ -45,10 +45,11 @@
 #include <qmediaservice.h>
 
 #include <gst/gst.h>
+
 QT_BEGIN_NAMESPACE
 class QAudioEndpointSelectorControl;
 class QVideoDeviceSelectorControl;
-QT_END_NAMESPACE
+
 
 class CameraBinSession;
 class CameraBinControl;
@@ -95,4 +96,6 @@ private:
     CameraBinImageCapture *m_imageCaptureControl;
 };
 
+QT_END_NAMESPACE
+
 #endif // CAMERABINCAPTURESERVICE_H