Method addSubButtonInput

src/webpage/settings.ts:2016–2022

(
		textContent: string,
		onSubmit: (opt: Options) => void,
		{ltr = false, noSubmit = false, intText = ""} = {},
	)

					(res: any) => {
						if (res.message) {
							throw new FormError(ti, res.message);
						} else {
							resolution(res);
							better.hide();
						}
					},
					{
						fetchURL: api + "/auth/mfa/totp",
						method: "POST",
						headers: {