Merge branch 'feature-nxdev' of https://gitea.nxsir.cn/code/IM into feature-nxdev

backend/IM_API/Models/User.cs

@@ -52,6 +52,11 @@ public partial class User
     /// </summary>
     public sbyte IsDeleted { get; set; }
 
+    /// <summary>
+    /// 用户头像链接
+    /// </summary>
+    public string? Avatar { get; set; }
+
     public virtual ICollection<Conversation> Conversations { get; set; } = new List<Conversation>();
 
     public virtual ICollection<Device> Devices { get; set; } = new List<Device>();