feat: 添加学生提交系统功能

- 添加学生提交管理服务 (StudentSubmissionService, StudentSubmissionDetailService)
- 新增学生提交相关控制器 (StudentSubmissionController, StudentSubmissionDetailController)
- 添加学生提交数据传输对象 (StudentSubmissionDetailDto, StudentSubmissionSummaryDto)
- 新增学生提交相关页面组件 (StudentExamView, ExamDetailView, StudentCard等)
- 添加学生提交信息卡片组件 (SubmissionInfoCard, TeacherSubmissionInfoCard)
- 更新数据库迁移文件以支持提交系统

Entities/DTO/StudentDto.cs

@@ -13,8 +13,9 @@ namespace Entities.DTO
 		public string? DisplayName { get; set; }
 
 		public UInt32 ErrorQuestionNum { get; set; }
-		public Dictionary<QuestionType, UInt32> ErrorQuestionTypes { get; set; } = new Dictionary<QuestionType, UInt32>();	
+		public Dictionary<string, UInt32> ErrorQuestionTypes { get; set; } = new Dictionary<string, UInt32>();	
 		public Dictionary<SubjectAreaEnum, UInt32> SubjectAreaErrorQuestionDis { get; set; } = new Dictionary<SubjectAreaEnum, UInt32>();	
 		public Dictionary<byte, UInt32> LessonErrorDis { get; set; } = new Dictionary<byte, UInt32>();	
+		public float Score { get; set; }
 	}
 }