With all non-legacy usages of ObjectManager being gone,
this final patch adds a series of @deprecation annotations
throughout the core, adapts some comments, and finally
adds a trigger_error() to ObjectManager->get().

Resolves: #94619
Related: #90803
Releases: master
Change-Id: Iaa65f7dee4e5aa9eb4e2c217e76105b0263dc6dc
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/70054


Tested-by: core-ci <typo3@b13.com>
Tested-by: Benni Mack <benni@typo3.org>
Tested-by: Jochen <rothjochen@gmail.com>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Benni Mack <benni@typo3.org>
Reviewed-by: Jochen <rothjochen@gmail.com>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>