Update RestChannel for new channel types

src/Discord.Net.Rest/Entities/Channels/RestChannel.cs

@@ -24,7 +24,14 @@ namespace Discord.Rest
         {
             return model.Type switch
             {
-                ChannelType.News or ChannelType.Text or ChannelType.Voice => RestGuildChannel.Create(discord, new RestGuild(discord, model.GuildId.Value), model),
+                ChannelType.News or
+                ChannelType.Text or
+                ChannelType.Voice or
+                ChannelType.Stage or
+                ChannelType.NewsThread or
+                ChannelType.PrivateThread or
+                ChannelType.PublicThread
+                    => RestGuildChannel.Create(discord, new RestGuild(discord, model.GuildId.Value), model),
                 ChannelType.DM or ChannelType.Group => CreatePrivate(discord, model) as RestChannel,
                 ChannelType.Category => RestCategoryChannel.Create(discord, new RestGuild(discord, model.GuildId.Value), model),
                 _ => new RestChannel(discord, model.Id),