feat: Guild Forum channel

https://github.com/discordjs/discord.js/pull/8651

src/errors/Messages.js

@@ -207,6 +207,8 @@ const Messages = {
   NITRO_REQUIRED: 'This feature is only available for Nitro users.',
   NITRO_BOOST_REQUIRED: feature => `This feature (${feature}) is only available for Nitro Boost users.`,
   ONLY_ME: 'This feature is only available for self.',
+
+  GUILD_FORUM_MESSAGE_REQUIRED: 'You must provide a message to create a guild forum thread',
 };
 
 for (const [name, message] of Object.entries(Messages)) register(name, message);