MC-41603: Add new options to configure PayPal PayLater styles to System configuration

- add missed system config file

Author: krissyhiserote

app/code/Magento/Paypal/Model/System/Config/Source/PayLater/TextSize.php

@@ -0,0 +1,32 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\Paypal\Model\System\Config\Source\PayLater;
+
+/**
+ * Source model for PayLater banner text size
+ */
+class TextSize
+{
+    /**
+     * PayLater text sizes source getter for Catalog Product Page
+     *
+     * @return array
+     */
+    public function getTextSizesCPP(): array
+    {
+        return [
+            '10' => '10px',
+            '11' => '11px',
+            '12' => '12px',
+            '13' => '13px',
+            '14' => '14px',
+            '15' => '15px',
+            '16' => '16px'
+        ];
+    }
+}