Add Wei succession scenario

data/campaign/campaign.json

@@ -248,6 +248,11 @@
       "id": "049_luoyang_summons",
       "title": "Luoyang Summons",
       "path": "res://data/scenarios/049_luoyang_summons.json"
+    },
+    {
+      "id": "050_wei_succession",
+      "title": "Wei Succession",
+      "path": "res://data/scenarios/050_wei_succession.json"
     }
   ]
 }