[MacOS] Ask user for permission to access microphone

This is required for MacOS 10.14 and later. This also requires an explanation why
access is required in the apps Info.plist. Hence added custom Info.plist templates
for each app.

src/blackmisc/macos/microphoneaccess.mm

@@ -0,0 +1,62 @@
+/* Copyright (C) 2019
+ * swift project Community / Contributors
+ *
+ * This file is part of swift project. It is subject to the license terms in the LICENSE file found in the top-level
+ * directory of this distribution. No part of swift project, including this file, may be copied, modified, propagated,
+ * or distributed except according to the terms contained in the LICENSE file.
+ */
+
+#include "microphoneaccess.h"
+#import <AVFoundation/AVFoundation.h>
+
+namespace BlackMisc
+{
+//#ifdef Q_OS_MAC
+
+    BlackMisc::CMacOSMicrophoneAccess::CMacOSMicrophoneAccess(QObject *parent) :
+        QObject(parent)
+    { }
+
+    void CMacOSMicrophoneAccess::requestAccess()
+    {
+        if (@available(macOS 10.14, *))
+        {
+            NSString *mediaType = AVMediaTypeAudio;
+            [AVCaptureDevice requestAccessForMediaType:mediaType completionHandler:^(BOOL granted)
+            {
+                emit permissionRequestAnswered(granted);
+            }];
+        }
+        else
+        {
+            emit permissionRequestAnswered(true);
+        }
+
+    }
+
+    CMacOSMicrophoneAccess::AuthorizationStatus CMacOSMicrophoneAccess::getAuthorizationStatus()
+    {
+        if (@available(macOS 10.14, *))
+        {
+            NSString *mediaType = AVMediaTypeAudio;
+            AVAuthorizationStatus authStatus = [AVCaptureDevice authorizationStatusForMediaType:mediaType];
+            if(authStatus == AVAuthorizationStatusAuthorized)
+            {
+                return AuthorizationStatus::Authorized;
+            }
+            else if(authStatus == AVAuthorizationStatusNotDetermined)
+            {
+                return AuthorizationStatus::NotDetermined;
+            }
+            return AuthorizationStatus::Denied;
+        }
+        else
+        {
+            return AuthorizationStatus::Authorized;
+        }
+
+    }
+
+// #endif
+}
+