[FEATURE] Introduce ForwardResponse for extbase

This patch introduces a PSR-7 compatible response class
which allows users to initiate forwarding to another
extbase controller action.

Returning a ForwardResponse replaces the helper function
forward() in the ActionController.

Releases: master
Resolves: #92815
Change-Id: I37b40d9e3de1125c0173d2115e0224cb1b13dc2f
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/66564


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Torben Hansen <derhansen@gmail.com>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Torben Hansen <derhansen@gmail.com>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Benni Mack <benni@typo3.org>