[TASK] Updated docblock for addTcaSelectItem()

Described optional 4th parameter for the $item array, which is used to add
items to defined groups from addTcaSelectItemGroup().

Releases: master
Resolves: #92479
Change-Id: I837c654c90d6e2305558125e697cde5c520bd271
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/66009


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Daniel Haupt <mail@danielhaupt.de>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Daniel Haupt <mail@danielhaupt.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>

typo3/sysext/core/Classes/Utility/ExtensionManagementUtility.php

@@ -424,6 +424,9 @@ class ExtensionManagementUtility
      * - $relativeToField = mailform
      * - $relativePosition = after
      *
+     * $item has an optional fourth parameter for the groupId (string), to attach the
+     * new item to. The groupname is defined when a group is added with addTcaSelectItemGroup
+     *
      * @throws \InvalidArgumentException If given parameters are not of correct
      * @throws \RuntimeException If reference to related position fields can not
      * @param string $table Name of TCA table