[TASK] Rename dir pageTypoScript to TsConfig

Change-Id: I1681e5a0685b7075c785a5fb5667bfd7c94d1684
Resolves: #62295
Reviewed-on: http://review.typo3.org/33347
Reviewed-by: Sebastian Fischer <typo3@evoweb.de>
Tested-by: Sebastian Fischer <typo3@evoweb.de>