Code generation: incorrect files included in projects

[MerrionComputing]

Because some code generated projects are dependent on others - for example [IdentityGroup] depends on the event definitions in [EventSourcing] some duplicate class definitions occur if files are included in both projects.

[MerrionComputing]

1. Exclude aggregate interface from QueryHandler and CommandHandler
2. Exclude identifier group interfaces from QueryDefinition

[MerrionComputing]

This is in ModelCodeGenerator.vb
Private Sub AddSourceFileToProjects(filenameBase As String, sourceFileType As ModelSourceFileType)