build: Linux package(.deb)

.deb package file for debian distros like ubuntu
To create the package use the command: ninja package
in the build directory

src/app/qt/element/QtMainWindow.cpp

@@ -25,6 +25,7 @@ QtMainWindow::QtMainWindow()
 	setObjectName("QtMainWindow");
 	setCentralWidget(nullptr);
 	setDockNestingEnabled(true);
+
 	setWindowIcon(QIcon("./data/gui/icon/logo_1024_1024.png"));
 
 	QApplication::setOverrideCursor(Qt::ArrowCursor);