feat: establish reservation portal foundation

resources/js/components/flash-messages.tsx

@@ -0,0 +1,19 @@
+import { usePage } from '@inertiajs/react';
+import { useEffect } from 'react';
+import { toast } from 'sonner';
+
+export function FlashMessages() {
+    const { flash } = usePage().props;
+
+    useEffect(() => {
+        if (flash.success) {
+            toast.success(flash.success);
+        }
+
+        if (flash.error) {
+            toast.error(flash.error);
+        }
+    }, [flash.error, flash.success]);
+
+    return null;
+}