Test adding github packages registry

Author: viklover

.github/workflows/publish.yml

@@ -42,4 +42,5 @@ jobs:
       - name: Publish NuGet package
         run: dotnet nuget push packages/*.nupkg \ 
           --api-key ${{ secrets.NUGET_API_KEY }} \
-          --source https://api.nuget.org/v3/index.json
+          --source https://nuget.pkg.github.com/viklover/index.json
+