[FEATURE] Add spinner on loading search result

Change-Id: I6137830f3ce6c272286161b39fe5c7e82754ce96
Resolves: #81313
Releases: master
Reviewed-on: https://review.typo3.org/53047


Reviewed-by: Johannes Goslar <jogo@kronberger-spiele.de>
Tested-by: Johannes Goslar <jogo@kronberger-spiele.de>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>