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

TechHelper.Server/Controllers/StudentSubmissionDetailController.cs

@@ -3,11 +3,11 @@ using Entities.DTO;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Identity;
 using Microsoft.AspNetCore.Mvc;
-using TechHelper.Server.Services;
 using TechHelper.Context;
 using TechHelper.Repository;
 using SharedDATA.Api;
 using System.Security.Claims;
+using TechHelper.Services.Beta;
 
 namespace TechHelper.Server.Controllers
 {
@@ -16,12 +16,12 @@ namespace TechHelper.Server.Controllers
     [Authorize]
     public class StudentSubmissionDetailController : ControllerBase
     {
-    private readonly IStudentSubmissionDetailService _studentSubmissionDetailService;
+    private readonly ISubmissionDetailService _studentSubmissionDetailService;
     private readonly UserManager<User> _userManager;
     private readonly IUnitOfWork _unitOfWork;
 
     public StudentSubmissionDetailController(
-        IStudentSubmissionDetailService studentSubmissionDetailService,
+		ISubmissionDetailService studentSubmissionDetailService,
         UserManager<User> userManager,
         IUnitOfWork unitOfWork)
     {
@@ -61,7 +61,7 @@ namespace TechHelper.Server.Controllers
                     return Forbid("您没有权限查看此提交记录");
                 }
 
-                var result = await _studentSubmissionDetailService.GetSubmissionDetailAsync(submissionId);
+                var result = await _studentSubmissionDetailService.GetBySubmissionIdAsync(submissionId);
 
                 if (result.Status)
                 {