refactor(map): 抽象卡牌背景颜色逻辑，简化代码

将多个文件中重复的卡池颜色切换逻辑提取为CardBgComp组件，
减少重复代码，提高可维护性

assets/resources/gui/element/cardbg.prefab

@@ -44,10 +44,13 @@
       },
       {
         "__id__": 196
+      },
+      {
+        "__id__": 198
       }
     ],
     "_prefab": {
-      "__id__": 198
+      "__id__": 200
     },
     "_lpos": {
       "__type__": "cc.Vec3",
@@ -4380,6 +4383,24 @@
     "__type__": "cc.CompPrefabInfo",
     "fileId": "1fB2CjJqJFgo9e1LJ6EyaL"
   },
+  {
+    "__type__": "d42d0cGD3NLYoBJEImijeH3",
+    "_name": "",
+    "_objFlags": 0,
+    "__editorExtras__": {},
+    "node": {
+      "__id__": 1
+    },
+    "_enabled": true,
+    "__prefab": {
+      "__id__": 199
+    },
+    "_id": ""
+  },
+  {
+    "__type__": "cc.CompPrefabInfo",
+    "fileId": "1fQvT1A5hItJZd6AwSBLLo"
+  },
   {
     "__type__": "cc.PrefabInfo",
     "root": {