Move EF project to maintain alphabetical ordering
Move EF project to maintain alphabetical ordering

(In particular, as this isn't versioned with the other Spanner
packages, it was a little annoying to have it in the middle. While
we could have it directly before or after the other Spanner
packages, I think it makes sense to keep it purely alphabetical.)

jskeet/google-cloud-dotnet,googleapis/google-cloud-dotnet,googleapis/google-cloud-dotnet,jskeet/gcloud-dotnet,jskeet/google-cloud-dotnet,googleapis/google-cloud-dotnet,jskeet/google-cloud-dotnet,jskeet/google-cloud-dotnet,jskeet/google-cloud-dotnet