refactor: 重构项目基础架构与实体体系

- 替换原有自定义生命周期接口为通用基础服务体系
- 将所有实体基类替换为带雪花ID的SqlSugarBaseEntity
- 迁移DTO到Models项目并统一管理
- 移除冗余的Repository层实现，改用通用基础服务
- 添加Yitter.IdGenerator雪花ID生成支持
- 重构SqlSugar数据库上下文与依赖注入配置
- 新增微信用户、用户勋章、背包等实体与配套服务
- 整理分页查询与结果封装类
- 优化WebApi控制器结构

QYZH.InteractiveMagazine.Models/Entity/UserBag.cs

@@ -1,64 +0,0 @@
-using SqlSugar;
-
-namespace QYZH.InteractiveMagazine.Models.Entity
-{
-    ///<summary>
-    ///用户背包表
-    ///</summary>
-    [SugarTable("UserBag")]
-    public partial class UserBag : BaseEntity
-    {
-           public UserBag(){
-
-
-           }
-           /// <summary>
-           /// Desc:用户Id
-           /// Default:
-           /// Nullable:False
-           /// </summary>           
-           public long UserId {get;set;}
-
-           /// <summary>
-           /// Desc:物品类型: MakeUpCard, PetBg
-           /// Default:
-           /// Nullable:False
-           /// </summary>           
-           public string ItemType {get;set;}
-
-           /// <summary>
-           /// Desc:关联商品Id或资源Id
-           /// Default:
-           /// Nullable:False
-           /// </summary>           
-           public int ItemId {get;set;}
-
-           /// <summary>
-           /// Desc:数量
-           /// Default:1
-           /// Nullable:False
-           /// </summary>           
-           public int Quantity {get;set;}
-
-           /// <summary>
-           /// Desc:扩展信息
-           /// Default:
-           /// Nullable:True
-           /// </summary>           
-           public string MetaData {get;set;}
-
-           /// <summary>
-           /// Desc:背包物品分类
-           /// Default:
-           /// Nullable:True
-           /// </summary>           
-           public string Type {get;set;}
-
-           /// <summary>
-           /// Desc:状态: Available, Expired
-           /// Default:Available
-           /// Nullable:False
-           /// </summary>           
-           public string Status {get;set;}
-    }
-}