Multi thread error raise support

src/device/DeviceManager.h

@@ -22,6 +22,9 @@ public:
     bool getErrorOccurred(){
         return errorOccurred;
     }
+    void emitErrorCallback(const char * msg);
+    signals:
+    void raiseGlobalError(QString msg);
 
 protected:
     void timerEvent(QTimerEvent* event) override ;