[TASK] Include suggest info into package metadata

Enhance the Package metadata with information about suggested packages.
This information may be loaded from composer.json or ext_emconf.php.

Resolves: #58701
Releases: 6.2
Change-Id: Ie7415ebe60d2c6164ccc52976a666fe07fd4afe0
Reviewed-on: https://review.typo3.org/30015
Reviewed-by: Thomas Maroschik
Tested-by: Fabien Udriot
Reviewed-by: Fabien Udriot
Reviewed-by: Stefan Neufeind
Reviewed-by: Xavier Perseguers
Tested-by: Xavier Perseguers