[!!!][TASK] Migrate Lowlevel "double_files" command to Symfony Console

The CLI command to find files that are referenced more than once
in TYPO3 is migrated to Symfony Console to better structure the
CLI command and get rid of dependencies of the old CLI command
line tools (non-extbase).

The command was previously available under
./typo3/cli_dispatch lowlevel_cleaner double_files

and is now called via
./typo3/sysext/core/bin/typo3 cleanup:multiplereferencedfiles

and allows the following options:
--dry-run - do not copy the files and update the references, but just print them
--update-refindex - update the reference index, do not ask the user

Resolves: #78627
Releases: master
Change-Id: I19039790227365ab951a954848565bcb0eb29c6b
Reviewed-on: https://review.typo3.org/50558


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>