tests: mv .php_cs to .php-cs-fixer.php

Author: gimler

.php-cs-fixer.php

@@ -0,0 +1,19 @@
+<?php
+$finder = PhpCsFixer\Finder::create()
+  ->in(__DIR__.'/src')
+  ->in(__DIR__.'/tests')
+  ->exclude('Resources')
+  ->name('*.php')
+;
+
+$config = new PhpCsFixer\Config();
+$config
+    ->setRiskyAllowed(true)
+    ->setRules([
+        '@Symfony' => true,
+        '@Symfony:risky' => true,
+    ])
+    ->setFinder($finder)
+;
+
+return $config;