[TASK] Center Install Tool cards horizontally

This commit updates the markup of the `Cards.html` files to make use of
containers in the Install Tool to align its cards horizontally to make
better use of the available space.

Resolves: #103621
Releases: main
Change-Id: Icad70957dc2565bc3830e9101d9fea4ce1798104
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/83778


Tested-by: Benjamin Franzke <ben@bnf.dev>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Benjamin Franzke <ben@bnf.dev>