refactor: 将尊享包Token统计逻辑从AiAccountService迁移至UsageStatisticsService，并移除AiUserRoleMenuDto相关字段

Yi.Abp.Net8/module/ai-hub/Yi.Framework.AiHub.Application.Contracts/Dtos/AiUserRoleMenuDto.cs

@@ -18,19 +18,4 @@ public class AiUserRoleMenuDto:UserRoleMenuDto
     /// VIP到期时间
     /// </summary>
     public DateTime? VipExpireTime { get; set; }
-
-    /// <summary>
-    /// 尊享包总Token数
-    /// </summary>
-    public long PremiumTotalTokens { get; set; }
-
-    /// <summary>
-    /// 尊享包已使用Token数
-    /// </summary>
-    public long PremiumUsedTokens { get; set; }
-
-    /// <summary>
-    /// 尊享包剩余Token数
-    /// </summary>
-    public long PremiumRemainingTokens { get; set; }
 }

Yi.Abp.Net8/module/ai-hub/Yi.Framework.AiHub.Application.Contracts/Dtos/UsageStatistics/PremiumTokenUsageDto.cs

@@ -0,0 +1,22 @@
+namespace Yi.Framework.AiHub.Application.Contracts.Dtos.UsageStatistics;
+
+/// <summary>
+/// 尊享服务Token用量统计DTO
+/// </summary>
+public class PremiumTokenUsageDto
+{
+    /// <summary>
+    /// 总Token数
+    /// </summary>
+    public long PremiumTotalTokens { get; set; }
+
+    /// <summary>
+    /// 已使用Token数
+    /// </summary>
+    public long PremiumUsedTokens { get; set; }
+
+    /// <summary>
+    /// 剩余Token数
+    /// </summary>
+    public long PremiumRemainingTokens { get; set; }
+}

Yi.Abp.Net8/module/ai-hub/Yi.Framework.AiHub.Application.Contracts/IServices/IUsageStatisticsService.cs

@@ -18,4 +18,10 @@ public interface IUsageStatisticsService
     /// </summary>
     /// <returns>模型Token使用量列表</returns>
     Task<List<ModelTokenUsageDto>> GetModelTokenUsageAsync();
+
+    /// <summary>
+    /// 获取当前用户尊享服务Token用量统计
+    /// </summary>
+    /// <returns>尊享服务Token用量统计</returns>
+    Task<PremiumTokenUsageDto> GetPremiumTokenUsageAsync();
 }