Feature: #102869 - List workspaces in LiveSearch 

See forge#102869

Description 

The backend LiveSearch is now able to list workspaces a backend user has access to, offering the possibility to switch to a workspace quickly outside the Workspaces module.

Impact 

Backend users now have another, quickly accessible way to access a workspace. With proper permissions, a backend user may also switch to the edit interface of a workspace to configure its settings.