[TASK] Extract install tool session handler into SessionHandler API

Use PHP's native \SessionHandlerInterface to allow further separation
of concerns and allow other packages to use a different implementation
(e.g. via redis).

Resolves: #90938
Releases: master
Change-Id: Ibc16efd0edd35df3f6673e3150929947ede5b500
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/64034


Tested-by: Josef Glatz <josefglatz@gmail.com>
Tested-by: Jonas Eberle <flightvision@googlemail.com>
Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Josef Glatz <josefglatz@gmail.com>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>