[DOCS] Move adminpanel TypoScript into manual

Resolves: #99542
Releases: main, 11.5
Change-Id: Ifa05cc27825bc4c89dd9b08f66c03505270fd815
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/77388


Reviewed-by: Josef Glatz <josefglatz@gmail.com>
Tested-by: Josef Glatz <josefglatz@gmail.com>
Tested-by: Nikita Hovratov <nikita.h@live.de>
Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Chris Müller <typo3@krue.ml>
Reviewed-by: Nikita Hovratov <nikita.h@live.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Chris Müller <typo3@krue.ml>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>