message: add: AnApplicationCommandWithThatNameAlreadyExists error code
diff: @@ -64,6 +64,7 @@ export enum DiscordJsonErrorCodes {
  ThisUserBannedFromThisGuild,
  TargetUserIsNotConnectedToVoice = 40032,
  ThisMessageHasAlreadyBeenCrossposted = 40033,
  + AnApplicationCommandWithThatNameAlreadyExists = 40041,
  MissingAccess = 50001,
  InvalidAccountType,
  CannotExecuteActionOnADMChannel,
  