feat: add failedqrscans route

lib/routes/failedQRScans.js

@@ -0,0 +1,14 @@
+const express = require('express')
+const router = express.Router()
+
+const { updateFailedQRScans } = require('../machine-loader')
+
+function failedQRScans (req, res, next) {
+  return updateFailedQRScans(req.deviceId, req.body)
+    .then(() => res.status(200).send({ status: 'OK' }))
+    .catch(next)
+}
+
+router.post('/', failedQRScans)
+
+module.exports = router