How to build a .nupkg package from a json/yaml file and what are the commands needed to install the .npukg?
Creation of a nupkg file is supported and should be performed only using the Robot component as it does and sign it in a way for Orchestrator to understand it. Unfortunately such .Net code cannot be shared externally. Directly doing it from the XAML file is not attempted yet.
Just as a guidance, follow Microsoft specification to issue such nuget file from Create a Package Using Nuget.exe CLI .