New runTests.sh option "-g" opens a tab in a local
browser pointing to http://localhost:7900/?autoconnect=1.
This allows watching acceptance tests clicking around.

Releases: main, 12.4, 11.5
Resolves: #101611
Change-Id: I53cbb861d7df6daac96dfcc382183f46847d7894
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/80367


Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>