refactor(MiniGame): 按分类重组小游戏定义符号文件到子目录

将 MiniGame 目录下的定义符号文件按平台类型重新组织：
- DomesticMiniGames: 国内小游戏（微信、支付宝、百度等）
- InternationalMiniGames: 国际小游戏（CrazyGames、Discord、Facebook等）
- DeviceOEMs: 设备厂商（华为、OPPO、Vivo、小米）
- GamePlatforms: 游戏平台（TapTap）

同时更新 MenuItem 路径，增加分类子菜单便于查找

Author: AlianBlank

Editor/MiniGame/DeviceOEMs.meta

@@ -18,7 +18,7 @@ public static partial class MiniGameDefineSymbolHelper
         /// Enables define symbols for Huawei mini game adaptation.
         /// </summary>
 #if UNITY_WEBGL
-        [MenuItem("GameFrameX/Scripting Define Symbols/Enable Huawei Mini Game(开启[华为小游戏]适配)", false, 3400)]
+        [MenuItem("GameFrameX/Scripting Define Symbols/Device OEMs(设备厂商)/Enable Huawei Mini Game(开启[华为小游戏]适配)", false, 3900)]
 #endif
         public static void EnableHuaweiMiniGame()
         {
@@ -44,7 +44,7 @@ public static void EnableHuaweiMiniGame()
         /// Disables define symbols for Huawei mini game adaptation.
         /// </summary>
 #if UNITY_WEBGL
-        [MenuItem("GameFrameX/Scripting Define Symbols/Disable Huawei Mini Game(关闭[华为小游戏]适配)", false, 3401)]
+        [MenuItem("GameFrameX/Scripting Define Symbols/Device OEMs(设备厂商)/Disable Huawei Mini Game(关闭[华为小游戏]适配)", false, 3901)]
 #endif
         public static void DisableHuaweiMiniGame()
         {

…ame/MiniGameDefineSymbolHelper.Huawei.cs …EMs/MiniGameDefineSymbolHelper.Huawei.csEditor/MiniGame/MiniGameDefineSymbolHelper.Huawei.cs renamed to Editor/MiniGame/DeviceOEMs/MiniGameDefineSymbolHelper.Huawei.cs Editor/MiniGame/MiniGameDefineSymbolHelper.Huawei.cs renamed to Editor/MiniGame/DeviceOEMs/MiniGameDefineSymbolHelper.Huawei.cs

@@ -18,7 +18,7 @@ public static partial class MiniGameDefineSymbolHelper
         /// Enables define symbols for OPPO mini game adaptation.
         /// </summary>
 #if UNITY_WEBGL
-        [MenuItem("GameFrameX/Scripting Define Symbols/Enable OPPO Mini Game(开启[OPPO小游戏]适配)", false, 3200)]
+        [MenuItem("GameFrameX/Scripting Define Symbols/Device OEMs(设备厂商)/Enable OPPO Mini Game(开启[OPPO小游戏]适配)", false, 3700)]
 #endif
         public static void EnableOPPOMiniGame()
         {
@@ -44,7 +44,7 @@ public static void EnableOPPOMiniGame()
         /// Disables define symbols for OPPO mini game adaptation.
         /// </summary>
 #if UNITY_WEBGL
-        [MenuItem("GameFrameX/Scripting Define Symbols/Disable OPPO Mini Game(关闭[OPPO小游戏]适配)", false, 3201)]
+        [MenuItem("GameFrameX/Scripting Define Symbols/Device OEMs(设备厂商)/Disable OPPO Mini Game(关闭[OPPO小游戏]适配)", false, 3701)]
 #endif
         public static void DisableOPPOMiniGame()
         {

…iniGameDefineSymbolHelper.Huawei.cs.meta …iniGameDefineSymbolHelper.Huawei.cs.metaEditor/MiniGame/MiniGameDefineSymbolHelper.Huawei.cs.meta renamed to Editor/MiniGame/DeviceOEMs/MiniGameDefineSymbolHelper.Huawei.cs.meta Editor/MiniGame/MiniGameDefineSymbolHelper.Huawei.cs.meta renamed to Editor/MiniGame/DeviceOEMs/MiniGameDefineSymbolHelper.Huawei.cs.meta

@@ -18,7 +18,7 @@ public static partial class MiniGameDefineSymbolHelper
         /// Enables define symbols for vivo mini game adaptation.
         /// </summary>
 #if UNITY_WEBGL
-        [MenuItem("GameFrameX/Scripting Define Symbols/Enable Vivo Mini Game(开启[vivo小游戏]适配)", false, 3100)]
+        [MenuItem("GameFrameX/Scripting Define Symbols/Device OEMs(设备厂商)/Enable Vivo Mini Game(开启[vivo小游戏]适配)", false, 3600)]
 #endif
         public static void EnableVivoMiniGame()
         {
@@ -44,7 +44,7 @@ public static void EnableVivoMiniGame()
         /// Disables define symbols for vivo mini game adaptation.
         /// </summary>
 #if UNITY_WEBGL
-        [MenuItem("GameFrameX/Scripting Define Symbols/Disable Vivo Mini Game(关闭[vivo小游戏]适配)", false, 3101)]
+        [MenuItem("GameFrameX/Scripting Define Symbols/Device OEMs(设备厂商)/Disable Vivo Mini Game(关闭[vivo小游戏]适配)", false, 3601)]
 #endif
         public static void DisableVivoMiniGame()
         {

…iGame/MiniGameDefineSymbolHelper.OPPO.cs …eOEMs/MiniGameDefineSymbolHelper.OPPO.csEditor/MiniGame/MiniGameDefineSymbolHelper.OPPO.cs renamed to Editor/MiniGame/DeviceOEMs/MiniGameDefineSymbolHelper.OPPO.cs Editor/MiniGame/MiniGameDefineSymbolHelper.OPPO.cs renamed to Editor/MiniGame/DeviceOEMs/MiniGameDefineSymbolHelper.OPPO.cs

@@ -18,7 +18,7 @@ public static partial class MiniGameDefineSymbolHelper
         /// Enables define symbols for Xiaomi mini game adaptation.
         /// </summary>
 #if UNITY_WEBGL
-        [MenuItem("GameFrameX/Scripting Define Symbols/Enable Xiaomi Mini Game(开启[小米小游戏]适配)", false, 3300)]
+        [MenuItem("GameFrameX/Scripting Define Symbols/Device OEMs(设备厂商)/Enable Xiaomi Mini Game(开启[小米小游戏]适配)", false, 3800)]
 #endif
         public static void EnableXiaomiMiniGame()
         {
@@ -44,7 +44,7 @@ public static void EnableXiaomiMiniGame()
         /// Disables define symbols for Xiaomi mini game adaptation.
         /// </summary>
 #if UNITY_WEBGL
-        [MenuItem("GameFrameX/Scripting Define Symbols/Disable Xiaomi Mini Game(关闭[小米小游戏]适配)", false, 3301)]
+        [MenuItem("GameFrameX/Scripting Define Symbols/Device OEMs(设备厂商)/Disable Xiaomi Mini Game(关闭[小米小游戏]适配)", false, 3801)]
 #endif
         public static void DisableXiaomiMiniGame()
         {