Add Ruxu river line scenario

data/campaign/campaign.json

@@ -213,6 +213,11 @@
       "id": "042_ruxu_advance",
       "title": "Ruxu Advance",
       "path": "res://data/scenarios/042_ruxu_advance.json"
+    },
+    {
+      "id": "043_ruxu_river_line",
+      "title": "Ruxu River Line",
+      "path": "res://data/scenarios/043_ruxu_river_line.json"
     }
   ]
 }