feat: 完成账号绑定功能

Yi.Abp.Net8/module/bbs/Yi.Framework.Bbs.Domain.Shared/Etos/BindAccountEto.cs

@@ -0,0 +1,10 @@
+namespace Yi.Framework.Bbs.Domain.Shared.Etos;
+
+/// <summary>
+/// 临时用户绑定到正式用户
+/// </summary>
+public class BindAccountEto
+{
+    public Guid NewUserId { get; set; }
+    public Guid OldUserId { get; set; }
+}