新增私聊相关

Entity/Social/Mail/Components/MailComponent.cs

@@ -4,7 +4,7 @@ using Fantasy.Helper;
 using MongoDB.Bson.Serialization.Attributes;
 using MongoDB.Bson.Serialization.Options;
 
-namespace NB.Game;
+namespace NB.Chat;
 
 /// <summary>
 /// 玩家邮件组件

Entity/Social/Mail/Components/MailManageComponent.cs

@@ -0,0 +1,19 @@
+using Fantasy.Entitas;
+
+namespace NB.Chat;
+
+/// <summary>
+/// 邮件管理组件
+/// </summary>
+public class MailManageComponent : Entity
+{
+    /// <summary>
+    /// 会话列表
+    /// </summary>
+    public Dictionary<string, MailConversation> Conversations = new Dictionary<string, MailConversation>();
+    
+    /// <summary>
+    /// 缓存了的列表
+    /// </summary>
+    public HashSet<long> CacheRoleIds = new HashSet<long>();
+}