[TASK] Add styleguide example for type group with allowed `*`

Resolves: #102714
Releases: main
Change-Id: If0ea2bb972308e361b1ec47a75a122b61006a772
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/82270


Tested-by: Benni Mack <benni@typo3.org>
Tested-by: Stefan Bürk <stefan@buerk.tech>
Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Stefan Bürk <stefan@buerk.tech>
Reviewed-by: Benni Mack <benni@typo3.org>