WinGet configure should look for a default config file if none is provided

Description of the new feature / enhancement

I'm a lazy developer and like to type as few characters as possible. It would be great if I could just run the winget configure command from the root of a project folder and the configure command would find my default config and use it. Similar to how I can run the npm install command with Node applications and I don't have to specify a path to my package.json, or I can run dotnet build for .NET apps and I don't have to specify what project file to build (but I can if the defaults don't work for me).

Proposed technical implementation details

When a user runs winget configure in a folder:

• Look first for the default configuration file in ./configurations/configuration.dsc.yaml (following the recommended default file naming conventions)
• If the default isn't found, behave the same as it does today
  • -or- Even better would be to recurse down from the current directory, look for files named *.dsc.yaml (or *.dsc.yml) and then provide the user with a list of relative file paths for all the configuration files found. This would make it easy to copy/paste and run winget configure -f with one of the discovered files.

Start at the winget configure command handling and trace how it behaves when no configuration file is supplied. Check the current file-selection path, then verify that ./configurations/configuration.dsc.yaml is discovered and used when present, while the existing behavior remains unchanged when it is absent.