Add ClientUnsubscribedObject class for admin email

app/Mail/Admin/ClientUnsubscribedObject.php

@@ -0,0 +1,55 @@
+<?php
+/**
+ * Invoice Ninja (https://invoiceninja.com).
+ *
+ * @link https://github.com/invoiceninja/invoiceninja source repository
+ *
+ * @copyright Copyright (c) 2023. Invoice Ninja LLC (https://invoiceninja.com)
+ *
+ * @license https://www.elastic.co/licensing/elastic-license
+ */
+
+namespace App\Mail\Admin;
+
+use App\Models\ClientContact;
+use App\Models\Company;
+use App\Utils\Ninja;
+use Illuminate\Support\Facades\App;
+
+class ClientUnsubscribedObject
+{
+    public function __construct(
+        public ClientContact $contact,
+        public Company $company
+    ) {
+    }
+
+    public function build()
+    {
+        App::forgetInstance('translator');
+        /* Init a new copy of the translator*/
+        $t = app('translator');
+        /* Set the locale*/
+        App::setLocale($this->company->getLocale());
+        /* Set customized translations _NOW_ */
+        $t->replace(Ninja::transformTranslations($this->company->settings));
+
+        $data = [
+            'title' => ctrans('texts.client_unsubscribed'),
+            'message' => ctrans('texts.client_unsubscribed_help', ['client' => $this->contact->present()->name()]),
+            'url' => $this->contact->client->portalUrl(false),
+            'button' => ctrans('texts.view_client'),
+            'signature' => $this->company->settings->email_signature,
+            'settings' => $this->company->settings,
+            'logo' => $this->company->present()->logo(),
+        ];
+
+        $mail_obj = new \stdClass();
+        $mail_obj->subject = ctrans('texts.client_unsubscribed');
+        $mail_obj->data = $data;
+        $mail_obj->markdown = 'email.admin.generic';
+        $mail_obj->tag = $this->company->company_key;
+
+        return $mail_obj;
+    }
+}