[FEATURE] VH to check if current item is active

The VH can be used if the same page shows a list view and a detail
view. By using the VH the list view can have e.g. a special class to
highlight the active one.

Change-Id: I66690f71884b464e5b11237cff4641fbff7f89de
Resolves: #54507
Releases: master,4x
Reviewed-on: https://review.typo3.org/26771
Reviewed-by: Georg Ringer
Tested-by: Georg Ringer