A new project, `DigitalData.MessagingService.Publisher`, has been added to the solution. The solution file (`DigitalData.MessagingService.sln`) was updated to include the project declaration, build configurations, and nesting under the appropriate parent project.
The new project targets `.NET 8.0` and includes the following configurations:
- Implicit Usings enabled.
- Nullable reference types enabled.
- Latest C# language version specified.
