Add setting to allow auto-fill signal dragging to skip over stations/waypoints

src/settings_type.h

@@ -254,6 +254,7 @@ struct GUISettings : public TimeSettings {
 	bool   auto_euro;                        ///< automatically switch to euro in 2002
 	byte   drag_signals_density;             ///< many signals density
 	bool   drag_signals_fixed_distance;      ///< keep fixed distance between signals when dragging
+	bool   drag_signals_skip_stations;       ///< continue past station/waypoint tiles when auto-fill dragging signals
 	Year   semaphore_build_before;           ///< build semaphore signals automatically before this year
 	byte   news_message_timeout;             ///< how much longer than the news message "age" should we keep the message in the history
 	bool   show_track_reservation;           ///< highlight reserved tracks.