重构项目结构，移除Assignment相关功能，优化Submission模块

TechHelper.Server/Services/User/IUserSerivces.cs

@@ -0,0 +1,20 @@
+using Entities.Contracts;
+using Entities.DTO;
+
+namespace TechHelper.Services.Beta
+{
+	public interface IUserSerivces : IBaseService<UserDto, Guid>
+	{
+		Task<ApiResponse> GetStudentDetailInfo(Guid userId);
+		Task<ApiResponse> RestoreUserRoleInformation(User user);
+		Task<ApiResponse> VerifyUserInformation(Guid userId);
+		/// <summary>
+		/// 注册新用户，并根据角色关联到班级
+		/// </summary>
+		/// <param name="registrationDto">用户注册数据</param>
+		/// <returns>操作结果</returns>
+		Task<ApiResponse> RegisterNewUserAsync(UserForRegistrationDto registrationDto);
+
+		Task<ApiResponse> InitAdminUser(UserForAdmin registrationDto);
+	}
+}