message: add: ApplicationCommand#guildId
diff: @@ -6,6 +6,8 @@ export interface ApplicationCommand {
  id: string;
  /** Unique id of the parent application */
  applicationId: string;
  + /** Guild id of the command, if not global */
  + guildId?: string;
  /** 1-32 character name matching lowercase `^[\w-]{1,32}$` */
  name: string;
  /** 1-100 character description */
  