[TASK] Extract WS-related code from BE_USER

The main goal of this change is to use constants
for sys_workspace.publish_access options to make
the code more readable.

This is made possible by moving the method
BE_USER->workspacePublishAccess to EXT:workspaces

Resolves: #102549
Releases: main
Change-Id: I47ba1e66a3c2e83fa31a2841fcdfd6fc217f1ed2
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/82006


Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Oliver Bartsch <bo@cedev.de>
Tested-by: Oliver Bartsch <bo@cedev.de>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Benni Mack <benni@typo3.org>