add support for extension vite plugin loading, add vue setup hook for extensions

resources/js/types/global.d.ts

@@ -2,11 +2,13 @@ import { PageProps as InertiaPageProps } from '@inertiajs/core';
 import { AxiosInstance } from 'axios';
 import ziggyRoute from 'ziggy-js';
 import { PageProps as AppPageProps } from './';
+import type { App } from 'vue';
 
 declare global {
     interface Window {
         axios: AxiosInstance;
         initialDataLoaded: boolean;
+        vueAppSetupHook?: (app: App) => void;
     }
 
     let route: typeof ziggyRoute;