add new cs-fixer rules and config file to ignore prev revs

.git-blame-ignore-revs

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+# Enforce php-cs-fixer new rules
+59dbff8de6a45fa6cbd7fb6c37075c151562b875

.php-cs-fixer.php

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+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the Behat.
+ * (c) Konstantin Kudryashov <ever.zet@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+use PhpCsFixer\Config;
+use PhpCsFixer\Finder;
+
+$header = <<<'OEF'
+This file is part of the Behat.
+(c) Konstantin Kudryashov <ever.zet@gmail.com>
+
+For the full copyright and license information, please view the LICENSE
+file that was distributed with this source code.
+OEF;
+
+$rules = [
+    '@PSR2' => true,
+    '@PSR12' => true,
+    '@PhpCsFixer' => true,
+    'header_comment' => ['header' => $header],
+    'array_syntax' => ['syntax' => 'short'],
+    'class_definition' => ['multi_line_extends_each_single_line' => true],
+	'concat_space' => false,
+    'heredoc_to_nowdoc' => true,
+	'php_unit_strict' => false,
+	'php_unit_construct' => true,
+	'php_unit_internal_class' => false,
+	'php_unit_test_class_requires_covers' => false,
+	'php_unit_test_case_static_method_calls' => false,
+    'phpdoc_add_missing_param_annotation' => true,
+    'phpdoc_order' => true,
+    'phpdoc_to_comment' => false,
+    'phpdoc_separation' => false,
+    'strict_comparison' => true,
+    'strict_param' => true,
+    'no_extra_blank_lines' => [
+        'tokens' => [
+            'break',
+            'continue',
+            'extra',
+            'return',
+            'throw',
+            'use',
+            'parenthesis_brace_block',
+            'square_brace_block',
+            'curly_brace_block',
+        ],
+    ],
+    'echo_tag_syntax' => true,
+    'semicolon_after_instruction' => true,
+	'single_line_comment_style' => false,
+    'combine_consecutive_unsets' => true,
+    'ternary_to_null_coalescing' => true,
+    'no_unused_imports' => true,
+    'no_superfluous_phpdoc_tags' => [
+        'allow_mixed' => true,
+    ],
+    'phpdoc_no_empty_return' => true,
+    'single_blank_line_at_eof' => true,
+    'yoda_style' => false,
+    'nullable_type_declaration_for_default_null_value' => true,
+	'multiline_whitespace_before_semicolons' => false
+];
+
+$finder = Finder::create()
+    ->in('src')
+    ->in('tests')
+    ->notPath('bootstrap.php');
+
+return (new Config())
+    ->setFinder($finder)
+    ->setRules($rules)
+    ->setRiskyAllowed(true);