[BUGFIX] Replace the table definition manipulation by signals

During installation of extensions the Extension Manager does
not take the Category API into account. The code to do so is
present in the Install Tool in the Database Compare Tool. It is
cumbersome to switch to the install tool to update the database
in order to use the category fields. The install tool and extension
manager currently need to know which components manipulate
the table definitions and this is bad coupling of components
which shouldn't know each other.

This fix replaces the individual calls to the components by two
signals and thus a generic approach.

Fixes: #53016
Releases: 6.2
Change-Id: Ibaea293b96fb1b8df1eacdcdd2f98acf74fb155b
Reviewed-on: https://review.typo3.org/24942
Reviewed-by: Stefan Neufeind
Tested-by: Stefan Neufeind
Reviewed-by: Fabien Udriot
Tested-by: Fabien Udriot
Reviewed-by: Thomas Maroschik
Tested-by: Thomas Maroschik