feat(config): 更新四象丹相关配置并优化 JSON 转 Lua 脚本

- 在 RecyclingSettingConfig.json 中更新 7 品证明回收设置，增加四象丹
- 在 StdItems.json 中为四象青龙丹、白虎丹、朱雀丹、玄武丹添加 itemlevel 字段
- 优化 json2lua.js 脚本，增加配置范围并改进 JSON 对象处理方式

configs/RecyclingSettingConfig.json

@@ -714,7 +714,7 @@
             "tips": "一键回收7品证明，需要绿卡会员",
             "Titletips": "绿卡会员可开启该道具一键回收",
             "value": 0,
-            "name": "7品证明",
+            "name": "7品证明和四象丹",
             "showQuality": 2,
             "optionid": 49,
             "itemlevel": 91,

configs/StdItems.json

@@ -47792,6 +47792,7 @@
     "name": "四象青龙丹",
     "dealPrice": 10,
     "dropBroadcast": 0,
+    "itemlevel": 91,
     "itemlvl": 3,
     "shape": 0,
     "existScenes": [
@@ -47838,6 +47839,7 @@
     "name": "四象白虎丹",
     "dealPrice": 10,
     "dropBroadcast": 0,
+    "itemlevel": 91,
     "itemlvl": 3,
     "shape": 0,
     "existScenes": [
@@ -47885,6 +47887,7 @@
     "name": "四象朱雀丹",
     "dealPrice": 10,
     "dropBroadcast": 0,
+    "itemlevel": 91,
     "itemlvl": 3,
     "shape": 0,
     "existScenes": [
@@ -47932,6 +47935,7 @@
     "name": "四象玄武丹",
     "dealPrice": 10,
     "dropBroadcast": 0,
+    "itemlevel": 91,
     "itemlvl": 3,
     "shape": 0,
     "existScenes": [