An expression for selecting a file

[loreanvictor]

While running reusable recipes, it is useful to allow the user choose one of their existing files (in the scope of the recipe). This is not currently possible with prompt and choices. It would look perhaps something like this:

prompt: Which file do you want to pick?
choose file: ./workflows/**/*

choose file accepts a glob. It can be enhanced to treat paths without any magic elements as folders and list files directly in that path.

Considerations:

• What about choosing folders? Should it be an explicit option to say "pick folders not files"?
• What about hidden files / paths? I suspect this can be done easily with an include hidden option similar to copy and update.