add vibration toggle

src/components/ble/NotificationManager.cpp

@@ -71,6 +71,14 @@ bool NotificationManager::AreNewNotificationsAvailable() {
   return newNotification;
 }
 
+bool NotificationManager::isVibrationEnabled() {
+  return vibrationEnabled;
+}
+
+void NotificationManager::toggleVibrations() {
+  vibrationEnabled = !vibrationEnabled;  
+}
+
 bool NotificationManager::ClearNewNotificationFlag() {
   return newNotification.exchange(false);
 }

src/components/ble/NotificationManager.h

@@ -28,6 +28,8 @@ namespace Pinetime {
       Notification GetPrevious(Notification::Id id);
       bool ClearNewNotificationFlag();
       bool AreNewNotificationsAvailable();
+      bool isVibrationEnabled();
+      void toggleVibrations();
 
       static constexpr size_t MaximumMessageSize() { return MessageSize; };
       size_t NbNotifications() const;
@@ -40,6 +42,7 @@ namespace Pinetime {
         uint8_t writeIndex = 0;
         bool empty = true;
         std::atomic<bool> newNotification{false};
+        bool vibrationEnabled = true;
     };
   }
 }