[FEATURE]-Automatically set GH nuget repo path for packages

[andrew-welker]

Is your feature request related to a problem? Please describe.
As template repos can be used across orgs to create repos, it makes sense to automate this. The repository owner is available in a workflow under the github.repository_owner value. This can be used to build the nuget registry URL for packages. The owner in the .nuspec file does have to match the org, so that change should be added to the docs/steps for creating a repo from this template.

It might be worth it to look at the GH Docs and see what other values can be pulled from context and used to make improvements to the workflows.

https://docs.github.com/en/actions/learn-github-actions/contexts#github-context