[TASK] Provide common base for PHP-based integrity checker

With one traverser class and several checkers all necessary
checks can be executed within one CI job, which saves time and
resources.

By feeding all checkers with the same set of files, we can be safe not
to lose any files that should be checked.

Resolves: #103465
Releases: main
Change-Id: I4a2f54c6fac37177c8387a999f5e60102951eba5
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/83568


Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Reviewed-by: Stefan Bürk <stefan@buerk.tech>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Stefan Bürk <stefan@buerk.tech>
Tested-by: Andreas Kienast <a.fernandez@scripting-base.de>
Reviewed-by: Andreas Kienast <a.fernandez@scripting-base.de>