Add custom hotkeys. (#2340)

Co-authored-by: LosFarmosCTL <80157503+LosFarmosCTL@users.noreply.github.com>
Co-authored-by: Paweł <zneix@zneix.eu>
Co-authored-by: Felanbird <41973452+Felanbird@users.noreply.github.com>
Co-authored-by: Rasmus Karlsson <rasmus.karlsson@pajlada.com>

src/widgets/Notebook.cpp

@@ -6,7 +6,6 @@
 #include "singletons/Theme.hpp"
 #include "singletons/WindowManager.hpp"
 #include "util/InitUpdateButton.hpp"
-#include "util/Shortcut.hpp"
 #include "widgets/Window.hpp"
 #include "widgets/dialogs/SettingsDialog.hpp"
 #include "widgets/helper/NotebookButton.hpp"
@@ -19,7 +18,6 @@
 #include <QFormLayout>
 #include <QLayout>
 #include <QList>
-#include <QShortcut>
 #include <QStandardPaths>
 #include <QUuid>
 #include <QWidget>