[TASK] Add information about ThreadStackSize to install tool

There is an information about the ThreadStackSize on Windows systems in
the Install.txt.

This information should be displayed in the Basic Configuration of the
Install Tool as well.

Change-Id: Iedbabccea903ab108220fbaf25492478b7e3ea1e
Resolves: #42237
Releases: 6.0
Reviewed-on: http://review.typo3.org/15848
Reviewed-by: Wouter Wolters
Reviewed-by: Jigal van Hemert
Tested-by: Jigal van Hemert