[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: I7f99ad7cadc323d4f8b975de97e4c665a82647a5
Reviewed-on: https://review.typo3.org/26506
Reviewed-by: Fabien Udriot
Reviewed-by: Helmut Hummel
Tested-by: Helmut Hummel