[TASK] Doctrine: Migrate QueryGenerator

Change-Id: I07a90d4564b5155414003b04972de1ee21e2af5d
Resolves: #77564
Releases: master
Reviewed-on: https://review.typo3.org/49528


Reviewed-by: Morton Jonuschat <m.jonuschat@mojocode.de>
Tested-by: Morton Jonuschat <m.jonuschat@mojocode.de>
Tested-by: Bamboo TYPO3com <info@typo3.com>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>