Feature: Setting to disallow level crossings with competitors (#10755)

src/table/settings/world_settings.ini

@@ -523,6 +523,13 @@ str      = STR_CONFIG_SETTING_STOP_ON_COMPETITOR_ROAD
 strhelp  = STR_CONFIG_SETTING_STOP_ON_COMPETITOR_ROAD_HELPTEXT
 cat      = SC_BASIC
 
+[SDT_BOOL]
+var      = construction.crossing_with_competitor
+def      = true
+str      = STR_CONFIG_SETTING_CROSSING_WITH_COMPETITOR
+strhelp  = STR_CONFIG_SETTING_CROSSING_WITH_COMPETITOR_HELPTEXT
+cat      = SC_BASIC
+
 [SDT_VAR]
 var      = construction.raw_industry_construction
 type     = SLE_UINT8