refactor: add custom Exception class

src/Exception/DomainNotFoundException.php

@@ -0,0 +1,11 @@
+<?php
+
+namespace App\Exception;
+
+class DomainNotFoundException extends \Exception
+{
+    public static function fromDomain(string $ldhName): DomainNotFoundException
+    {
+        return new DomainNotFoundException("The domain name $ldhName is not present in the WHOIS database");
+    }
+}