Add homepage announcement module

app/Observers/HomepageAnnouncementObserver.php

@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Observers;
+
+use App\Models\HomepageAnnouncement;
+use App\Services\HomepageAnnouncementService;
+
+class HomepageAnnouncementObserver
+{
+    public function saved(HomepageAnnouncement $announcement): void
+    {
+        app(HomepageAnnouncementService::class)->clearActiveCache();
+    }
+
+    public function deleted(HomepageAnnouncement $announcement): void
+    {
+        app(HomepageAnnouncementService::class)->clearActiveCache();
+    }
+
+    public function restored(HomepageAnnouncement $announcement): void
+    {
+        app(HomepageAnnouncementService::class)->clearActiveCache();
+    }
+
+    public function forceDeleted(HomepageAnnouncement $announcement): void
+    {
+        app(HomepageAnnouncementService::class)->clearActiveCache();
+    }
+}