Project manager should warn when two projects share the same groupId and artifactId

Is your feature request related to a problem? Please describe.

I have a workspace of multiple Java projects. When two projects share the same groupId and artifactId, one of them do not get recognized by Project Manager, and thus not able to get built and debugged.

Describe the solution you'd like

In the case, project manager should either support it or throw error about it, instead of silently doing nothing.

Describe alternatives you've considered

I have to remove one of the projects from the same workspace to get the other loading.

Additional context
Add any other context or screenshots about the feature request here.

Commencez par localiser la logique de Project Manager dans le dépôt vscode-java qui identifie les projets par groupId et artifactId, puis reproduisez le problème avec deux projets Java partageant ces deux valeurs dans un même workspace. Le travail est considéré comme terminé si les projets sont pris en charge ensemble ou si le Project Manager présente une erreur explicite au lieu d’en ignorer un silencieusement.