Limitations on `project remove`

[BoykoAlex]

Currently if I attempt to remove a project that was brought in by a project catalog it won't be removed from the list of projects. Try: spring project remove --name modulith This seems successful with output: Project 'modulith' removed Now listing projects with spring project list still contains modulith project.

We should either document that projects belonging to project-catalogs cannot be deleted with project remove as well as provide proposer output in the shell or allow this deletion.