A new project, `ECMJobRunner.Domain`, has been added to the solution file (`ECM.JobRunner.sln`). The project targets both .NET Framework 4.8 (`net480`) and .NET 8.0 (`net8.0`) and includes metadata for NuGet packaging, such as `PackageId`, `Authors`, and `RepositoryUrl`.
Build configurations for `Debug|Any CPU` and `Release|Any CPU` have been added to the solution configuration. The project file (`ECMJobRunner.Domain.csproj`) also specifies the generation of XML documentation files.
