Move sculpin-old files to sculpin-old directory

sculpin-old/.php_cs.dist

@@ -0,0 +1,14 @@
+<?php
+
+use PhpCsFixer\Config;
+use Symfony\Component\Finder\Finder;
+
+$finder = new Finder();
+$finder->files()->in(['src', 'tests']);
+
+return Config::create()
+    ->setRules([
+        '@PSR2' => true,
+        'array_syntax' => ['syntax' => 'short'],
+    ])
+    ->setFinder($finder);