feat: 添加注册人数分析，优化bbs聊天回车优化

Yi.Abp.Net8/module/bbs/Yi.Framework.Bbs.Application.Contracts/Dtos/Analyse/RegisterAnalyseDto.cs

@@ -0,0 +1,20 @@
+namespace Yi.Framework.Bbs.Application.Contracts.Dtos.Analyse;
+
+public class RegisterAnalyseDto
+{
+    public RegisterAnalyseDto(DateTime time, int number)
+    {
+        Time = time;
+        Number = number;
+    }
+
+    /// <summary>
+    /// 时间
+    /// </summary>
+    public DateTime Time { get; set; }
+
+    /// <summary>
+    /// 人数
+    /// </summary>
+    public int Number { get; set; }
+}