[TASK] Add convenience method for extbase JSON responses

Since #92784 extbase actions require to return a PSR-7 Response.
To ease the migration path, the convenience method htmlResponse()
was added. This method creates a new PSR-7 Response with the correct
header and status code. Furthermore, in case no $html content is
given explicitly, the current view is rendered and the result
passed as response body.

Extbase however also features the JsonView, which is widely
used in third-party extensions as well as in multiple core
controllers itself. Also TSFE has to be respected when adding
the content-type header with the correct charset. Therefore,
a new method jsonResponse(), with similar functionality to
htmlResponse(), is now added along with adaptations of all
places in core controllers.

Resolves: #94440
Related: #92784
Releases: master
Change-Id: Ic591a8788f586050578db8b4187e29325d180f49
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/69664


Tested-by: core-ci <typo3@b13.com>
Tested-by: Benni Mack <benni@typo3.org>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Oliver Bartsch <bo@cedev.de>
Reviewed-by: Benni Mack <benni@typo3.org>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Oliver Bartsch <bo@cedev.de>