[TASK] Add alias for grunt tasks

After this patch you need no local grunt-cli
you can run all task with npm like `npm run build-css`

Resolves: #81491
Releases: master, 8.7
Change-Id: I112ec3f2102c23ecfa8a715933905d03ef35e55f
Reviewed-on: https://review.typo3.org/53145


Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>