Add .NET project-to-project references. More information: https://learn.microsoft.com/dotnet/core/tools/dotnet-add-reference.
dotnet add reference {{path/to/reference.csproj}}
dotnet add reference {{path/to/reference1.csproj path/to/reference2.csproj ...}}
dotnet add {{path/to/project.csproj}} reference {{path/to/reference.csproj}}
dotnet add {{path/to/project.csproj}} reference {{path/to/reference1.csproj path/to/reference2.csproj ...}}