[TASK] Move Dashboard out of web

To allow the dashboard to be positioned out of the "Web" main module,
we rebuilt the module menu to allow direct top level modules.

Additionally, the styling for the module menu was adjusted to allow
mobile and keyboard friendly navigation and layout.


Resolves: #90862
Releases: master
Change-Id: I1005bac37a214530fb9e304fec2406799fe92240
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/63718


Tested-by: Richard Haeser <richard@maxserv.com>
Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Riccardo De Contardi <erredeco@gmail.com>
Tested-by: Benjamin Kott <benjamin.kott@outlook.com>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Reviewed-by: Richard Haeser <richard@maxserv.com>
Reviewed-by: Benjamin Kott <benjamin.kott@outlook.com>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>