[FEATURE] CLI command to install and uninstall extensions by key

This change adds a CommandContoller for EXT:extensionmanager;
this new ComandController contains two actions (install, uninstall)
which is then handled by the Utility which contains the actual logic.

Usage example: ./typo3/cli_dispatch.phpsh extbase extension:install [key]

Resolves: #51629
Releases: 6.2
Change-Id: I3561a427f4eff4c5041326f706ed8c77bbbbe9be
Reviewed-on: https://review.typo3.org/23535
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters