[FEATURE] Add DESC sorting for FILES-cObject

Add new property "direction" in sorting
to order fileObjects in reverse order

Documentation: #53183
Resolves: #53130
Releases: 6.2
Change-Id: I2b31d1ca3afb3738d267ed0de8e1c3ca791f0980
Reviewed-on: https://review.typo3.org/25023
Reviewed-by: Gernot Ploiner
Tested-by: Gernot Ploiner
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters