[!!!][TASK] Remove dependencies of TSFE

This patch re-arranges the TYPO3 Core internally used
middlewares for lifting off the weight of $GLOBALS['TSFE']
as Site Handling already introduced a lot of functionality
which can now be utilized further.

For this reason, the Frontend Rendering chain has
been adapted.

* If there is a "Site" + "Language" resolved, this information can
be used directly, as there are no dependencies currently.

* Frontend + Backend User Authentication works regardless
of TSFE, Frontend User is added to the Request object as
attribute to be added to TSFE later-on.

* Resolving the Page ("slug") and mapping them to Page
Arguments (URL parts + GET parameters) as well as validation
against cHash is fully decoupled from TSFE.

After that, TSFE is instantiated, which now gets all resolved
objects injected.

TSFE now only resolves the rootline against the proper permissions
(auth) and validates the final page. Once done, TypoScript is
compiled / cached.

TSFE still contains the rootline, TypoScript, and the information
about which non-cacheables are there.

RequestHandler creates or fetches cached content, but currently piped
through TSFE. This should be simplified further later-on.

Resolves: #88717
Releases: master
Change-Id: I12807455fd8b01493b2da45cf73a5c532b108cbe
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/61155


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>