[FEATURE] Enable select item groups through TSconfig

With this change you're able to use TCA select item groups within
Page TSconfig in TCEFORM section like

   TCEFORM.tx_myext_domain_model_a.record_type.addItems {
     1 = item label
     1.icon = icon-identifier
     1.group = tx_myext_group
   }

Releases: main
Resolves: #99212
Change-Id: Id57b1cf820cc4f264f010f437c638bd3839920cf
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/76844


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