feat(notifikasi): tambahkan kelas PermohonanNotif untuk notifikasi permohonan

- Menambahkan kelas PermohonanNotif yang mengimplementasikan notifikasi di Laravel.
- Menggunakan saluran pengiriman 'mail' dan 'database'.
- Menyediakan metode untuk mengirim representasi email dan array dari notifikasi.

app/Notifications/PermohonanNotif.php

@@ -0,0 +1,50 @@
+<?php
+
+namespace Modules\Lpj\Notifications;
+
+use Illuminate\Bus\Queueable;
+use Illuminate\Notifications\Notification;
+use Illuminate\Contracts\Queue\ShouldQueue;
+use Illuminate\Notifications\Messages\MailMessage;
+
+class PermohonanNotif extends Notification
+{
+    use Queueable;
+    protected $permohonan;
+    /**
+     * Create a new notification instance.
+     */
+    public function __construct($permohonan)
+    {
+        $this->permohonan = $permohonan;
+    }
+
+    /**
+     * Get the notification's delivery channels.
+     */
+    public function via($notifiable): array
+    {
+        return ['mail','database'];
+    }
+
+    /**
+     * Get the mail representation of the notification.
+     */
+    public function toMail($notifiable): MailMessage
+    {
+        return (new MailMessage)
+            ->line('The introduction to the notification.')
+            ->action('Notification Action', 'https://laravel.com')
+            ->line('Thank you for using our application!');
+    }
+
+    /**
+     * Get the array representation of the notification.
+     */
+    public function toArray($notifiable): array
+    {
+        return [
+            'data' => $this->permohonan,
+        ];
+    }
+}