Add setting: station rating waiting time tolerance depends on cargo class

src/table/settings.ini

@@ -1421,6 +1421,14 @@ proc     = StationCatchmentChanged
 extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_STATION_CATCHMENT_INC)
 patxname = ""station_catchment_inc.station.catchment_increase""
 
+[SDT_BOOL]
+base     = GameSettings
+var      = station.cargo_class_rating_wait_time
+def      = false
+str      = STR_CONFIG_SETTING_STATION_RATING_CARGO_CLASS_WAIT_TIME
+strhelp  = STR_CONFIG_SETTING_STATION_RATING_CARGO_CLASS_WAIT_TIME_HELPTEXT
+patxname = ""station_rating.station.cargo_class_rating_wait_time""
+
 [SDT_BOOL]
 base     = GameSettings
 var      = order.gradual_loading