[FIX] set a default behavior for http methods

Before this commit. there was no default behavior in case the method request was not handled, which meant that we would try to iterate on an undefined `registeredRoutes` which would lead to a traceback.

The issue is not critical as it only leads to an `ERROR` in the logs.

Author: ThanhDodeurOdoo

src/services/http.js

@@ -181,6 +181,10 @@ class RouteListener {
             case "POST":
                 registeredRoutes = this.POSTs.entries();
                 break;
+            default:
+                logger.warn(`[${remoteAddress}] ${req.method} is not allowed on ${req.url}`);
+                res.statusCode = 405; // Method not allowed
+                return res.end();
         }
         for (const [pattern, options] of registeredRoutes) {
             if (pathname === pattern) {