feat: add hide_history_before option for adding members

src/Clients/ChannelClient.Members.cs

@@ -19,6 +19,7 @@ public async Task<UpdateChannelResponse> AddMembersAsync(string channelType, str
                 {
                     AddMembers = userIds,
                     HideHistory = options?.HideHistory,
+                    HideHistoryBefore = options?.HideHistoryBefore,
                     Message = msg,
                 });
 

src/Models/Channel.cs

@@ -124,6 +124,7 @@ public class ChannelUpdateRequest
         public MessageRequest Message { get; set; }
         public bool? SkipPush { get; set; }
         public bool? HideHistory { get; set; }
+        public DateTimeOffset? HideHistoryBefore { get; set; }
         public ChannelRequest Data { get; set; }
         public string UserId { get; set; }
         public UserRequest User { get; set; }

src/Models/User.cs

@@ -71,6 +71,7 @@ public class OwnUser
     public class AddMemberOptions
     {
         public bool? HideHistory { get; set; }
+        public DateTimeOffset? HideHistoryBefore { get; set; }
     }
 
     public class UserPartialRequest : CustomDataBase