[TASK] Enable backendlayouts/ tsConfig on doktype menu separator

[TASK] Enable backendlayouts/ tsConfig on doktype menu separator

Adds to page with doktype=199 (spacer) the tab "Appereance" with palette
"backend layout" and the tab "Resources" with palette "TSConfig".

Resolves: #77892
Releases: master
Change-Id: I3c5a47fcc551858bc889a7fe127d241b0f961faf
Reviewed-on: https://review.typo3.org/53810
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Susanne Moog <susanne.moog@typo3.org>
Tested-by: Susanne Moog <susanne.moog@typo3.org>