Introduced six new internal DTO classes: CatalogReadDto, CatalogWriteDto, DashboardInfoDto, LayoutDto, MassdataReadDto, and MassdataWriteDto. Each class resides in its appropriate namespace and currently contains no properties or methods, serving as placeholders for future data transfer logic.
Added new DbFirst.Contracts project targeting .NET 8.0 with nullable and implicit usings enabled. Included a project reference to DbFirst.Domain and updated the solution file to register the new project with all build configurations.