chore: initial Laravel 13 + Filament 5 + Shield setup

resources/js/app.js

@@ -0,0 +1 @@
+import './bootstrap';

resources/js/bootstrap.js

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+import axios from 'axios';
+window.axios = axios;
+
+window.axios.defaults.headers.common['X-Requested-With'] = 'XMLHttpRequest';