Add reference to Domain for the Data project.

Note that this command, did not work in Ubuntu. I just added the html to the project file myself.

dotnet reference add

https://learn.microsoft.com/en-us/dotnet/core/tools/dotnet-reference-add

EntityFrameworkCore.Data/EntityFrameworkCore.Data.csproj

@@ -10,4 +10,9 @@
     <PackageReference Include="Microsoft.EntityFrameworkCore" Version="9.0.3" />
   </ItemGroup>
 
+  <ItemGroup>
+    <ProjectReference Include="../EntityFrameworkCore.Domain/EntityFrameworkCore.Domain.csproj" />
+  </ItemGroup>
+
+
 </Project>