[TASK] Decouple extension setup from installation

This patch introduces an API which does all necessary setup steps for an
extension without activating it or clearing the caches. This is useful
in deployment scenarios as well as enhancing the composer
usage experience.

The patch
* adds an own cache for available extension information in ListUtility
* decouples the function to retrieve basic extension information
* adds an api method to setup an extension

Resolves: #70606
Releases: master
Change-Id: I7b535cf0a17cfa7c6c68ed67486ce04a5cabbfc0
Reviewed-on: http://review.typo3.org/44011


Reviewed-by: Helmut Hummel <helmut.hummel@typo3.org>
Tested-by: Helmut Hummel <helmut.hummel@typo3.org>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>