Added cookie-parser to app.use

ref #25

src/loaders/express.ts

@@ -1,10 +1,11 @@
+import cookieParser from "cookie-parser";
 import { Application } from "express";
-
 /**
  * Loader for express related configurations.
  * Currently only enables the proxy trust.
  */
 export default async (app: Application) => {
 	app.enable('trust proxy');
+	app.use(cookieParser());
 	return app;
 };