[TASK] Add jasmine typings as dev dependency

This patch add jasmine typings as dev dependency which brings IDE
support / code completion for the testing framework.

Resolves: #78397
Releases: master
Change-Id: I174cc178ded87670dcd8baba6d08a42e633cec34
Reviewed-on: https://review.typo3.org/50340


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Stefan Bürk <stefan.buerk@impactmedia.de>
Tested-by: Stefan Bürk <stefan.buerk@impactmedia.de>
Reviewed-by: Patricia Tiedemann <pixelaeffchen@googlemail.com>
Tested-by: Patricia Tiedemann <pixelaeffchen@googlemail.com>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>