Add "PHP Coding Standards Fixer" tool to project

.gitignore

@@ -0,0 +1 @@
+/.php-cs-fixer.cache

.php-cs-fixer.dist.php

@@ -0,0 +1,27 @@
+<?php
+
+declare(strict_types=1);
+
+use PhpCsFixer\Config;
+use PhpCsFixer\Finder;
+
+require_once __DIR__ . '/tools/php-cs-fixer/vendor/autoload.php';
+
+$rules = [
+    '@PER-CS' => true,
+    '@PHP82Migration' => true,
+    // TODO configure other rules
+];
+
+$finder = Finder::create();
+$finder->files();
+$finder->in(dirs: __DIR__);
+$finder->exclude(dirs: ['core/vendor', 'tools', 'website/var', 'website/vendor']);
+$finder->append(iterator: [__FILE__, __DIR__ . '/website/bin/console']);
+
+$config = new Config(name: 'Quintolin coding standard');
+$config->setFinder(finder: $finder);
+$config->setRiskyAllowed(isRiskyAllowed: true);
+$config->setRules(rules: $rules);
+
+return $config;

Makefile

@@ -21,3 +21,10 @@ clean_cache:
 clean_logs:
 	rm --force --recursive --verbose website/var/log
 
+.PHONY: install_php_cs_fixer
+install_php_cs_fixer:
+	composer --quiet --working-dir=tools/php-cs-fixer install
+
+.PHONY: fix_coding_style
+fix_coding_style: install_php_cs_fixer
+	tools/php-cs-fixer/vendor/bin/php-cs-fixer fix -vvv

README.md

@@ -45,4 +45,5 @@ This project is published to multiple core-sharing portals:
 - [doc](doc/README.md): developer documentation
 - [legacy](legacy/README.md): History and source code of previous versions of
   the game
+- `tools`: developer tools
 - [website](website/README.md): website and UI

tools/php-cs-fixer/.gitignore

@@ -0,0 +1 @@
+/vendor/

tools/php-cs-fixer/composer.json

@@ -0,0 +1,18 @@
+{
+  "name": "krzysztof-sikorski/php-cs-fixer-bundle",
+  "description": "Dummy project to load php-cs-fixer package.",
+  "type": "project",
+  "license": "MIT",
+  "require-dev": {
+    "friendsofphp/php-cs-fixer": "^v3.42"
+  },
+  "minimum-stability": "stable",
+  "prefer-stable": true,
+  "config": {
+    "preferred-install": "dist",
+    "optimize-autoloader": true,
+    "sort-packages": true,
+    "notify-on-install": false,
+    "platform-check": true
+  }
+}