添加登录功能

Apimanager_backend/Dtos/CreateUserDto.cs

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+namespace Apimanager_backend.Dtos
+{
+    public class CreateUserDto
+    {
+    }
+}

Apimanager_backend/Dtos/ResponseBase.cs

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+namespace Apimanager_backend.Dtos
+{
+    /// <summary>
+    /// 响应基类，构造最后的返回结果
+    /// </summary>
+    /// <typeparam name="T">返回的具体数据类型</typeparam>
+    public class ResponseBase<T>
+    {
+        public int Code { get; set; }
+        public string Message { get; set; }
+        public T? Data { get; set; }
+        public ResponseBase(int code,string message,T data)
+        {
+            this.Code = code;
+            this.Message = message;
+            this.Data = data;
+        }
+        public ResponseBase() { }
+    }
+}

Apimanager_backend/Dtos/UpdateUserDto.cs

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+namespace Apimanager_backend.Dtos
+{
+    public class UpdateUserDto
+    {
+    }
+}

Apimanager_backend/Dtos/UserInfoDto.cs

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+using Apimanager_backend.Models;
+
+namespace Apimanager_backend.Dtos
+{
+    public class UserInfoDto
+    {
+        public int Id { get; set; }
+        public string UserName { get; set; }
+        public string Email { get; set; }
+        public UserRole Role { get; set; }
+        public bool IsBan { get; set; }
+        public decimal Balance { get; set; }
+        public DateTime Created { get; set; }
+    }
+}

Apimanager_backend/Dtos/UserLoginDto.cs

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+using System.ComponentModel.DataAnnotations;
+
+namespace Apimanager_backend.Dtos
+{
+    public class UserLoginDto
+    {
+        [MaxLength(20)]
+        public string UserName { get; set; }
+        public string Password { get; set; }
+    }
+}