Deprecated Google Charts

[arshx86]

Google charts has deprecated a months ago, current google charts implementation are not working and getting 404 status. An implementation via node-qrcode would work without issues.

        const secret = twofactor.generateSecret({ name: 'urApp', account: user.username });
        var QRCode = require('qrcode');
        const totpurl = secret.uri;
        const qr = QRCode.toDataURL(totpurl, function (err, data_url) {
            res.json({ qr: data_url });
        });