[TASK] Add missing license headers to new PHP files

Resolves: #84121
Releases: master
Change-Id: Idf51b84880d56db4d54cbad2e556bccbcf888ba1
Reviewed-on: https://review.typo3.org/55992


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Benjamin Franzke <bfr@qbus.de>
Tested-by: Benjamin Franzke <bfr@qbus.de>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>