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

TechHelper.Client/Shared/ManageLayout.razor

@@ -9,3 +9,17 @@
 		@Body
 	</MudStack>
 </MudPaper>
+
+
+@code {
+    [CascadingParameter]
+    private Task<AuthenticationState> authenticationStateTask { get; set; }
+
+    protected override void OnParametersSet()
+    {
+        if (authenticationStateTask is null)
+        {
+            // NavigationManager.Refresh(forceReload: true);
+        }
+    }
+}