Add configurable shortcuts for drawing tools

src/config/configwindow.h

@@ -21,6 +21,7 @@
 
 class FileNameEditor;
 class FilePathConfiguration;
+class ShortcutsWidget;
 class GeneneralConf;
 class QFileSystemWatcher;
 class VisualsEditor;
@@ -39,6 +40,7 @@ protected:
 private:
     FileNameEditor *m_filenameEditor;
     FilePathConfiguration *m_filePathConfiguration;
+    ShortcutsWidget *m_shortcuts;
     GeneneralConf *m_generalConfig;
     VisualsEditor *m_visuals;
     QFileSystemWatcher *m_configWatcher;