Init: add code scaffolding

.php-cs-fixer.php

@@ -0,0 +1,39 @@
+<?php
+
+$finder = PhpCsFixer\Finder::create()
+    ->notName('phpstan-baseline.php')
+    ->in(__DIR__);
+
+$config = new PhpCsFixer\Config();
+$config
+    ->setRules([
+        '@Symfony' => true,
+        '@PSR2' => true,
+        '@PhpCsFixer' => true,
+        '@PHP81Migration' => true,
+        'array_syntax' => ['syntax' => 'short'],
+        'blank_line_after_opening_tag' => false,
+        'blank_line_before_statement' => ['statements' => ['declare', 'try']],
+        'blank_line_between_import_groups' => false,
+        'cast_spaces' => false,
+        'concat_space' => ['spacing' => 'one'],
+        'echo_tag_syntax' => ['format' => 'long'],
+        'global_namespace_import' => true,
+        'increment_style' => ['style' => 'post'],
+        'multiline_whitespace_before_semicolons' => ['strategy' => 'no_multi_line'],
+        'no_whitespace_in_blank_line' => false,
+        'ordered_class_elements' => false,
+        'php_unit_internal_class' => false,
+        'php_unit_test_class_requires_covers' => false,
+        'phpdoc_align' => ['align' => 'left'],
+        'phpdoc_separation' => false,
+        'phpdoc_summary' => false,
+        'phpdoc_types_order' => ['null_adjustment' => 'always_last'],
+        'single_line_comment_style' => ['comment_types' => ['hash']],
+        'yoda_style' => false,
+    ])
+    ->setIndent('    ')
+    ->setLineEnding("\n")
+    ->setFinder($finder);
+
+return $config;