[TASK] Use Environment API instead of PATH_site for Cache Backends

The new Environment API is now used to define hashes or base paths
in cache backend classes.

Resolves: #85200
Releases: master
Change-Id: I08f770bf959274995e7983b800d8a569aee7cd47
Reviewed-on: https://review.typo3.org/57161


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Tymoteusz Motylewski <t.motylewski@gmail.com>
Tested-by: Tymoteusz Motylewski <t.motylewski@gmail.com>