Feat: refactor routes.js express entrypoint config

Feat: express config script refactor

Feat: add state and settingsCache files

lib/middlewares/ca.js

@@ -0,0 +1,12 @@
+const pairing = require('../pairing')
+
+function ca (req, res) {
+  console.log("ca")
+  const token = req.query.token
+
+  return pairing.authorizeCaDownload(token)
+    .then(ca => res.json({ ca }))
+    .catch(() => res.status(403).json({ error: 'forbidden' }))
+}
+
+module.exports = ca