[TASK] Allow overriding current site url during installation

Especially to ease using the API on CLI,
we now add a request argument for the siteUrl
which is preferred over the current site url to
create a default site configuration.

Resolves: #91214
Releases: master
Change-Id: If00beb2550909c2334d99a61283c6d7f546b25d7
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/64329


Tested-by: Benjamin Franzke <bfr@qbus.de>
Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Benjamin Franzke <bfr@qbus.de>
Reviewed-by: Benni Mack <benni@typo3.org>