logic: fixed showing Windows console and getting stuck while quitting

* fixed Sourcetrail being stuck while closing the application
* building Sourcetrail as Console application by default
* hiding console during runtime on Windows if Sourcetrail is started with GUI

src/lib_gui/qt/window/QtMainWindow.cpp

@@ -379,7 +379,7 @@ void QtMainWindow::closeEvent(QCloseEvent* event)
 	{
 		log->setEnabled(false);
 	}
-	MessageWindowClosed().dispatch();
+	MessageWindowClosed().dispatchImmediately();
 }
 
 void QtMainWindow::resizeEvent(QResizeEvent *event)