Add php-cs-fixer dependency and github rule

Author: Wout Gevaert

.github/workflows/main.yml

@@ -27,6 +27,7 @@ jobs:
       COMPOSER_VERSION: 2
       INSTALL_PATH: php-cypher-dsl
       REPOSITORY_NAME: php-cypher-dsl
+      FIXER_RULES: @PSR12,align_multiline_comment,array_indentation,blank_line_before_statement,indentation_type,no_trailing_whitespace,no_unused_imports,no_useless_else,no_useless_return,ordered_imports,phpdoc_scalar,return_assignment,simplified_if_return,single_line_after_imports,switch_case_space,trailing_comma_in_multiline,ternary_operator_spaces
 
     steps:
       # https://getcomposer.org/download/
@@ -55,8 +56,14 @@ jobs:
       - name: Install dependencies
         run: composer update --working-dir ${{ env.INSTALL_PATH }}
 
+      - name: Run php-cs-fixer on src
+        run: ./vendor/bin/php-cs-fixer fix --dry-run --verbose --rules=${{ env.FIXER_RULES }} ./src
+
+      - name: Run php-cs-fixer on tests
+        run: ./vendor/bin/php-cs-fixer fix --dry-run --verbose --rules=${{ env.FIXER_RULES }} ./tests
+
       - name: Run unit tests
         run: composer test --working-dir ${{ env.INSTALL_PATH }}
 
       - name: Run mutation tests
-        run: composer infect --working-dir ${{ env.INSTALL_PATH }}
+        run: composer infect --working-dir ${{ env.INSTALL_PATH }}

composer.json

@@ -40,7 +40,8 @@
   },
   "require-dev": {
     "phpunit/phpunit": "~9.0",
-    "infection/infection": "^0.25.5"
+    "infection/infection": "^0.25.5",
+    "friendsofphp/php-cs-fixer": "^3.0"
   },
   "autoload": {
     "psr-4": {