[TASK] RTE: Move hooks and softref config to Configuration directory

Releases: master
Resolves: #62759
Change-Id: I198a7ad5a131dc96c0dc4d669125061097867f5d
Reviewed-on: http://review.typo3.org/33865
Reviewed-by: Stanislas Rolland <typo3@sjbr.ca>
Tested-by: Stanislas Rolland <typo3@sjbr.ca>