[FEATURE] - Let FLUIDTEMPLATE mimic an actual extbase web request

Adds the possibility to let the FLUIDTEMPLATE content element mimic an
actual extbase web request.
This makes it possible to access submitted data like in extbase with
...->controllerContext->getRequest()->getArguments()

Resolves: #78842
Releases: master
Change-Id: I27e34e11ae9d5526ee694825cb74b6fcc6e42061
Reviewed-on: https://review.typo3.org/50814


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Gleb Levitin <gleb.levitin@dkd.de>
Tested-by: Gleb Levitin <gleb.levitin@dkd.de>
Reviewed-by: Jan Helke <typo3@helke.de>
Tested-by: Jan Helke <typo3@helke.de>