Need to index generated files

[PadraigK]

When using build tool plugins in Swift packages, it's possible to generate code that is then available to the project. Some examples of projects that do this are:

• SwiftGodot — generates language bindings from a json file
• Swift OpenAPI Generator - generates API from an OpenAPI spec file.

When the build tools run, they generate their output in .build/plugins/outputs

Since this is in a hidden root folder which is generally in .gitignore I think that by default Nova will not index them. I was able to get things working with these project settings:

I'm not sure if a plugin can influence the indexing allow/block list, but it would be great to have this "just work" somehow.