[FEATURE] Enable chaining of set* funtions

Applies chaining possibility for set*
handling methods within querysettings api.

Make sure method chaining like
$query->getQuerySettings()->setRespectStoragePage(FALSE)
                          ->setRespectSysLanguage(FALSE)
                          ->setIgnoreEnableFields(TRUE)
                          ->setIncludeDeleted(TRUE);
is possible for all methods.

Releases: 6.2
Resolves: #47684
Change-Id: I3ce6eb3b100cf7762d885ad28f118a17f3268977
Reviewed-on: https://review.typo3.org/21121
Reviewed-by: Philipp Gampe
Tested-by: Philipp Gampe
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn