refactor sitemap generation and navigation handling; remove old GenerateSitemap command, update to use tasks for better organization, and enhance navigation data retrieval

app/Containers/AppStructure/Tasks/GetEventsForSitemapTask.php

@@ -0,0 +1,17 @@
+<?php
+
+namespace App\Containers\AppStructure\Tasks;
+
+use App\Containers\Event\Models\Event;
+
+class GetEventsForSitemapTask
+{
+    public function run()
+    {
+        $now = now()->toDateString();
+
+        return Event::query()
+            ->where('event_date_end', '>=', $now)
+            ->get();
+    }
+}