Feature: #88807 - AdminPanel RequestEnricherInterface has been introduced

See forge#88807


The AdminPanel initialisation process has been refactored and an interface called \TYPO3\CMS\Adminpanel\ModuleApi\RequestEnricherInterface has been introduced.


With the \TYPO3\CMS\Adminpanel\ModuleApi\RequestEnricherInterface, adminpanel modules gain the ability to manipulate the request object during TYPO3's processing of the PSR-15 middlewares. All modules implementing the interface need a method enrich($request) and may return an altered $request in their processing. At the end of the processing, the $request has to be returned and will in turn be used in further PSR-15 middleware stack processing.