* Add a comprehensive prompt for containerizing ASP.NET Core projects
This prompt instructs the LLM to conatinerize an ASP.NET Core project
according to ASP.NET Core best practices with flexibility to support a
wide range of possible project customization requirements (including
installing system dependencies, dotnet tools, or other pre-requisites
for the app to work in a container).
* Update readme with ASP.NET Core containerization prompt
* Fix settings file's name
* Combine containerization settings into containerization prompt
* Emphasize that Copilot needs to review its work and check that containerization settings have been respected
