Add Ruxu advance scenario

data/campaign/campaign.json

@@ -208,6 +208,11 @@
       "id": "041_hanzhong_settlement",
       "title": "Hanzhong Settlement",
       "path": "res://data/scenarios/041_hanzhong_settlement.json"
+    },
+    {
+      "id": "042_ruxu_advance",
+      "title": "Ruxu Advance",
+      "path": "res://data/scenarios/042_ruxu_advance.json"
     }
   ]
 }