[TASK] Doctrine: Add support for column aliases in select()

Add support for selecting a column under a different identifier (alias)
when building a SELECT query.

Releases: master
Resolves: #75823
Change-Id: I3464c9d848c4892ea57b92cc1257654ff9e14110
Reviewed-on: https://review.typo3.org/47820


Reviewed-by: Michael Oehlhof <typo3@oehlhof.de>
Tested-by: Michael Oehlhof <typo3@oehlhof.de>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>