Added 384k sample rate to the CoreAudio support. (Apparently people actually need that..)

modules/juce_audio_devices/native/juce_mac_CoreAudio.cpp

@@ -277,7 +277,7 @@ public:
 
             if (OK (AudioObjectGetPropertyData (deviceID, &pa, 0, nullptr, &size, ranges)))
             {
-                static const double possibleRates[] = { 44100.0, 48000.0, 88200.0, 96000.0, 176400.0, 192000.0 };
+                static const double possibleRates[] = { 44100.0, 48000.0, 88200.0, 96000.0, 176400.0, 192000.0, 384000.0 };
 
                 for (int i = 0; i < numElementsInArray (possibleRates); ++i)
                 {