convert captcha image to simple image
import {captcha_to_image_base64} from 'captcha_to_image_base64'
import fs from "fs";
var base64_captcha_img = await fs.readFileSync('./captcha.jpg', 'base64');
var base64_new_img = await captcha_to_image_base64(base64_captcha_img);
console.log(base64_new_img);