Feat: refactor routes.js express entrypoint config

Feat: express config script refactor

Feat: add state and settingsCache files

lib/middlewares/populateDeviceId.js

@@ -0,0 +1,22 @@
+const _ = require('lodash/fp')
+
+function sha256 (buf) {
+  const crypto = require('crypto')
+  const hash = crypto.createHash('sha256')
+
+  hash.update(buf)
+  return hash.digest('hex').toString('hex')
+}
+
+const populateDeviceId = function (req, res, next) {
+  const deviceId = _.isFunction(req.connection.getPeerCertificate)
+    ? sha256(req.connection.getPeerCertificate().raw)
+    : null
+
+  req.deviceId = deviceId
+  req.deviceTime = req.get('date')
+
+  next()
+}
+
+module.exports = populateDeviceId