feat(notification): add Pushover

app/Notifications/Server/DockerCleanupSuccess.php

@@ -5,6 +5,7 @@ namespace App\Notifications\Server;
 use App\Models\Server;
 use App\Notifications\CustomEmailNotification;
 use App\Notifications\Dto\DiscordMessage;
+use App\Notifications\Dto\PushoverMessage;
 use App\Notifications\Dto\SlackMessage;
 use Illuminate\Notifications\Messages\MailMessage;
 
@@ -48,6 +49,15 @@ class DockerCleanupSuccess extends CustomEmailNotification
         ];
     }
 
+    public function toPushover(): PushoverMessage
+    {
+        return new PushoverMessage(
+            title: 'Docker cleanup job succeeded',
+            level: 'success',
+            message: "Docker cleanup job succeeded on {$this->server->name}!\n\n{$this->message}",
+        );
+    }
+
     public function toSlack(): SlackMessage
     {
         return new SlackMessage(