Add tests for PHP class attribute placement and fix whitespace in regex

Co-authored-by: barryvdh <[email protected]>

tests/Console/ModelsCommand/PhpAttributesBeforeClass/Models/Simple.php

@@ -0,0 +1,12 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Barryvdh\LaravelIdeHelper\Tests\Console\ModelsCommand\PhpAttributesBeforeClass\Models;
+
+use Illuminate\Database\Eloquent\Model;
+
+#[\AllowDynamicProperties]
+class Simple extends Model
+{
+}