[TASK] Provide acceptance test suite for stand alone Install Tool

The acceptance tests folder 'InstallTool' holds tests that ensure
the proper display of options in the stand alone Install Tool.
A brand new test suite takes care of execution.

Resolves: #89489
Releases: master, 10.4
Change-Id: Iaeedfd5a2db26d4ba111855dc3137f2e8ca8fa27
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/62085


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Benni Mack <benni@typo3.org>
Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Benni Mack <benni@typo3.org>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>