[TASK] Switch to json_encode/json_decode for Extbase arguments

Extbase argument mapping and request building can be optimized
by using json_encode instead of serialize which is a bit more
"space-saving".

Besides that information in [__referrer][arguments] is dropped
which was supposed to have happened in TYPO3 v8 already.

Resolves: #88682
Releases: master
Change-Id: Ifbb4192803378b1c1984405bdca04c282b8f4335
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/61223


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Tested-by: Alexander Schnitzler <review.typo3.org@alexanderschnitzler.de>
Tested-by: Johannes Seipelt <johannes.seipelt@3m5.de>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Alexander Schnitzler <review.typo3.org@alexanderschnitzler.de>
Reviewed-by: Johannes Seipelt <johannes.seipelt@3m5.de>