feat(config): 新增多倍经验功能相关配置

- 在 ItemMergeConfig.json 中添加多倍经验兑换配置
- 在 MergeConfig.json 中添加多倍经验合成配置
- 在 NumericalIcon.json 中更新多倍经验图标信息

configs/ItemMergeConfig.json

@@ -4150,6 +4150,54 @@
           { "id": 4, "type": 4, "count": 100000 }
         ]
       }
+    },
+    "4":{
+      "3401":{
+        "circle": 1,
+        "compose": {
+          "id": 14,
+          "type": 14,
+          "count": 25000000
+        },
+        "index": 3,
+        "text": "兑换",
+        "buttontxt10": "合成10次",
+        "mergebutton10": 1,
+        "Eid": 3401,
+        "second_index": 4,
+        "table": [
+          {
+            "id": 300,
+            "type": 0,
+            "count": 10
+          }
+        ],
+        "openserverday": 1,
+        "level": 1
+      },
+      "3402":{
+        "circle": 1,
+        "compose": {
+          "id": 14,
+          "type": 14,
+          "count": 80000000
+        },
+        "index": 3,
+        "text": "兑换",
+        "buttontxt10": "合成10次",
+        "mergebutton10": 1,
+        "Eid": 3402,
+        "second_index": 4,
+        "table": [
+          {
+            "id": 301,
+            "type": 0,
+            "count": 10
+          }
+        ],
+        "openserverday": 1,
+        "level": 1
+      }
     }
   },
   "4": {