[TASK] Reformats with namespaces for TYPO3 > 6.0

Resolves: #52869
Releases: 6.2
Change-Id: I36fec91b1e1a811e8c63e726613f8de8378f6bdc
Reviewed-on: https://review.typo3.org/24825
Reviewed-by: Thomas Loeffler
Tested-by: Thomas Loeffler