In their documentation apple states that -
You can share asset catalogs across multiple projects in the same workspace.
I have a project in a workspace with multiple targets and an other project in the same workspace that I want to use to share it's catalog with all the targets of his neighbour project.
SharedProject(Framework)
--AssetsCatalog
MainProject
--Target1
--Target2
--etc
Any one has managed to do so and help ?