[TASK] Add sonarcloud analysis to travis

Add sonar-project.properties as basic configuration
and add travis configuration for running sonar analyis
on the core.

Resolves: #82685
Releases: master
Change-Id: I6c2886068c81e15e92b3562cf4200f3e80ff59db
Reviewed-on: https://review.typo3.org/54303


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: Benni Mack <benni@typo3.org>