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

Entities/DTO/Authentication/AuthResponseDto.cs

@@ -0,0 +1,12 @@
+namespace Entities.DTO
+{
+    public class AuthResponseDto
+	{
+		public bool IsAuthSuccessful { get; set; }
+		public string? ErrorMessage { get; set; }
+		public string? Token { get; set; }
+		public string? RefreshToken { get; set; }
+		public bool Is2StepVerificationRequired { get; set; }	
+		public string Provider { get; set; }	
+	}
+}

Entities/DTO/Authentication/ForgotPasswordDto.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Entities.DTO
+{
+	public class ForgotPasswordDto
+	{
+		[Required]
+		[EmailAddress]
+		public string Email { get; set; }
+		public string ClientURI { get; set; }
+	}
+}

Entities/DTO/Authentication/RefreshTokenDto.cs

@@ -0,0 +1,8 @@
+namespace Entities.DTO
+{
+    public class RefreshTokenDto
+	{
+		public string? Token { get; set; }
+		public string? RefreshToken { get; set; }
+	}
+}

Entities/DTO/Authentication/ResetPasswordDto.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Entities.DTO
+{
+	public class ResetPasswordDto
+	{
+		[Required(ErrorMessage = "Password is required")]
+		public string Password { get; set; }
+
+		[Compare(nameof(Password), ErrorMessage = "The password and confirmation password do not match")]
+		public string ConfirmPassword {  get; set; }
+
+		public string Email { get; set; }
+
+		public string Token { get; set; }
+	}
+}

Entities/DTO/Authentication/ResetPasswordResponseDto.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Entities.DTO
+{
+	public class ResetPasswordResponseDto
+	{
+		public bool IsResetPasswordSuccessful { get; set; }	
+		public IEnumerable<string> Errors { get; set; } = Enumerable.Empty<string>();
+	}
+}

Entities/DTO/Authentication/TwoFactorVerificationDto.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Entities.DTO
+{
+	public class TwoFactorVerificationDto
+	{
+		public string Email { get; set; }	
+		public string Provider { get; set; }
+		[Required(ErrorMessage = "Token is required")]
+		public string TwoFactorToken { get; set; }
+	}
+}

Entities/DTO/Authentication/UserForAuthenticationDto.cs

@@ -0,0 +1,12 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace Entities.DTO
+{
+	public class UserForAuthenticationDto
+	{
+		[Required(ErrorMessage = "Email is required")]
+		public string? Email { get; set; }
+		[Required(ErrorMessage = "Password is required")]
+		public string? Password { get; set; }
+	}
+}