Add PHP-CS-Fixer Workflow

Signed-off-by: DL6ER <dl6er@dl6er.de>

.github/workflows/php-cs-fixer.yml

@@ -0,0 +1,13 @@
+# .github/workflows/php-cs-fixer.yml
+on: [push, pull_request]
+name: Lint
+jobs:
+  php-cs-fixer:
+    name: PHP-CS-Fixer
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@master
+    - name: PHP-CS-Fixer
+      uses: docker://oskarstark/php-cs-fixer-ga
+      with:
+        args: --diff --dry-run

.gitignore

@@ -7,6 +7,7 @@ TODO
 *.zip
 test.html
 *.log
+.php-cs-fixer.cache
 
 # Intellij IDEA Project Files
 *.iml

.php-cs-fixer.dist.php

@@ -0,0 +1,29 @@
+<?php
+
+/* Pi-hole: A black hole for Internet advertisements
+*  (c) 2022 Pi-hole, LLC (https://pi-hole.net)
+*  Network-wide ad blocking via your own hardware.
+*
+*  This file is copyright under the latest version of the EUPL.
+*  Please see LICENSE file for your rights under this license.
+*/
+
+declare(strict_types=1);
+
+$finder = PhpCsFixer\Finder::create()
+    ->ignoreDotFiles(false)
+    ->ignoreVCSIgnored(true)
+    ->exclude('scripts/vendor')
+    ->in(__DIR__)
+;
+
+$config = new PhpCsFixer\Config();
+$config
+    ->setRules(array(
+        '@PhpCsFixer' => true,
+        'array_syntax' => array('syntax' => 'long'),
+    ))
+    ->setFinder($finder)
+;
+
+return $config;