feat(catalog): add sales_end_at field to catalog items and implement sale logic

feat(event): include catalog items in event resource and update event service
test(seeder): add FiestaTradicionArrufoSeeder for event and catalog item setup
config: set event timezone for local event dates

config/app.php

@@ -67,6 +67,9 @@ return [
 
     'timezone' => 'UTC',
 
+    // Las fechas de los eventos se ingresan como horarios locales de Argentina.
+    'event_timezone' => env('EVENT_TIMEZONE', 'America/Argentina/Buenos_Aires'),
+
     /*
     |--------------------------------------------------------------------------
     | Application Locale Configuration