Normalize and enforce single quotes in scripts

- Add quotes and semi rules to ESLint
- Fix quotes and semicolons

resources/assets/scripts/main.js

@@ -2,7 +2,7 @@
 import 'jquery';
 
 // Import everything from autoload
-import "./autoload/**/*"
+import './autoload/**/*';
 
 // import local dependencies
 import Router from './util/Router';

resources/assets/scripts/util/Router.js

@@ -60,4 +60,4 @@ class Router {
   }
 }
 
-export default Router
+export default Router;