Feat: refactor routes.js express entrypoint config

Feat: express config script refactor

Feat: add state and settingsCache files

lib/middlewares/settingsCache.js

@@ -0,0 +1,19 @@
+const state = require('./state')
+
+const getTimestamp = () => state.settingsCache.timestamp
+
+const getCache = () => state.settingsCache.cache
+
+const setTimestamp = (newTimestamp) => state.settingsCache.timestamp = newTimestamp
+
+const setCache = (newCache) => state.settingsCache.cache = newCache
+
+const clearCache = () => state.settingsCache.cache = null
+
+module.exports = {
+  getTimestamp,
+  getCache,
+  setTimestamp,
+  setCache,
+  clearCache
+}