Describe the issue
Noticed that some of the PHP file - for example lib/pkp/classes/core/PKPPageRouter.php are not formatted yet with php-cs-fixer. I am using php-cs-fixer in vscode to format files on file save - and as result when I introduce new changes its combination of code specific changes and formatting changes which makes PRs difficult to review.

Our current setup (intended)

• we rely on friendsofphp/php-cs-fixer to apply formatting rules
• rules configuration is lib/pkp/.php_cs_rules
• on app level (ojs/omp/ops) we rely on JS tools - lint-staged and husky to execute the php formatting. The formatting is applied only on files that has been changed (staged).
• on pkp-lib level we use captainhook, because js toolkit is not present there to achieve the same thing - format php files that has been changed on precommit hook

Proposed steps for improvements

• apply the formatting on all php files to have up to date formatting
• check whether both (on app level and pkp-lib level) mechanisms for automatic formatting on precommit work
• probably good opportunity to update version of php-cs-fixer before applying the format changes

What application are you using?
OJS, OMP or OPS version main