PHP-CS-Fixer and code reformatting

.gitattributes

@@ -3,4 +3,5 @@ tools/ export-ignore
 .gitattributes export-ignore
 .github/ export-ignore
 .gitignore export-ignore
+.php-cs-fixer.php export-ignore
 phpstan.neon export-ignore

.github/workflows/tests_24.yaml

@@ -1,4 +1,4 @@
-name: GnuPG 2.4 + phpstan
+name: GnuPG 2.4 + SA + CS
 
 on:
   push:
@@ -36,6 +36,9 @@ jobs:
       - name: Install dependencies
         run: composer install --prefer-dist --no-interaction --no-progress
 
+      - name: Execute php-cs-fixer
+        run: php vendor/bin/php-cs-fixer fix --dry-run --using-cache=no --diff --verbose --allow-unsupported-php-version=yes
+
       - name: Execute phpstan
         run: php -dmemory_limit=256M vendor/bin/phpstan analyse -v
 

.gitignore

@@ -6,3 +6,4 @@ tests/config.php
 tests/debug.log
 tests/test-keychain/
 tests/.phpunit.result.cache
+.php-cs-fixer.cache

.php-cs-fixer.php

@@ -0,0 +1,13 @@
+<?php
+
+$finder = (new PhpCsFixer\Finder())
+    ->in(__DIR__)
+;
+
+return (new PhpCsFixer\Config())
+    ->setRules([
+        '@PER-CS' => true,
+        '@PHP8x1Migration' => true,
+    ])
+    ->setFinder($finder)
+;