feat: add account deletion notifications

This also sets up notifications for all site admins

app/Notifications/UserDeletedAccount.php

@@ -0,0 +1,70 @@
+<?php
+
+namespace App\Notifications;
+
+use Illuminate\Bus\Queueable;
+use Illuminate\Contracts\Queue\ShouldQueue;
+use Illuminate\Notifications\Messages\MailMessage;
+use Illuminate\Notifications\Notification;
+
+class UserDeletedAccount extends Notification implements ShouldQueue
+{
+    use Queueable;
+
+    /**
+     * @var string The email belonging to the user who wiped their acct.
+     */
+    public string $deletedEmail;
+
+    /**
+     * Create a new notification instance.
+     *
+     * @return void
+     */
+    public function __construct($deletedEmail)
+    {
+        $this->deletedEmail = $deletedEmail;
+    }
+
+    /**
+     * Get the notification's delivery channels.
+     *
+     * @param  mixed  $notifiable
+     * @return array
+     */
+    public function via($notifiable)
+    {
+        return ['mail'];
+    }
+
+    /**
+     * Get the mail representation of the notification.
+     *
+     * @param  mixed  $notifiable
+     * @return \Illuminate\Notifications\Messages\MailMessage
+     */
+    public function toMail($notifiable)
+    {
+        return (new MailMessage)
+            ->greeting('Hi ' . $notifiable->name . ',')
+            ->from(config('notification.sender.address'), config('notification.sender.name'))
+            ->subject(config('app.name').' - someone deleted their account')
+            ->line("The user {$this->deletedEmail} has just deleted their account. You may wish to review the situation.")
+            ->line('You are receiving this email because you\'re a site admin.')
+            ->action('View current users', url(route('registeredPlayerList')))
+            ->salutation('The team at ' . config('app.name'));
+    }
+
+    /**
+     * Get the array representation of the notification.
+     *
+     * @param  mixed  $notifiable
+     * @return array
+     */
+    public function toArray($notifiable)
+    {
+        return [
+            //
+        ];
+    }
+}