[Feature] DotNet New Template

A dotnet new template for building a worker that reads from a specified transport, and uses a specified inbox would be a great quick start tool for adoption.

Less useful for a producer, where in most cases you would want to integrate with ASP.NET or the like.

You might want a producer as part of the worker though.

Start with the dotnet new template conventions and the worker integration points for a specified transport and inbox. Define the supported configuration and whether a producer belongs in the worker template; done means the template creates a usable worker quick start with those choices documented and verified.

Written by the indexing model from the issue text.