Feat: refactor routes.js express entrypoint config

Feat: express config script refactor

Feat: add state and settingsCache files

lib/routes/stateRoutes.js

@@ -0,0 +1,14 @@
+const express = require('express')
+const router = express.Router()
+
+const helpers = require('../route-helpers')
+
+function stateChange (req, res, next) {
+  helpers.stateChange(req.deviceId, req.deviceTime, req.body)
+    .then(() => res.status(200).json({}))
+    .catch(next)
+}
+
+router.post('/', stateChange)
+
+module.exports = router