[TASK] Introduce types in LocalDriver / FAL

This change is a overhaul of the LocalDriver class
after 12 years. All comments are updated, types
are added, where possible.

Resolves: #101468
Releases: main
Change-Id: Ie639d352415a67a8f4d499913b5c30f8d6e1b33b
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/81041


Tested-by: Stefan Bürk <stefan@buerk.tech>
Reviewed-by: Stefan Bürk <stefan@buerk.tech>
Reviewed-by: Oliver Bartsch <bo@cedev.de>
Tested-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>