adding support for adding files that are not associated with a target

[skofgar]

For some projects it might be helpful to add files to a project that don't belong to a specific target.

For example, README.md files or the project.yml.

files:
  - path: README.md
  - path: project.yml
  - path: Resources/Config
    name: Config
    includes:
      - "*.json"

Known Issues

• Currently I just use TargetSources to achieve this capability. If the general direction of this PR is acceptable, then I would - in a separate PR - rename TargetSources to SourcesReference (or something similar)

[skofgar]

Hi @yonaskolb may I request a review for this PR?

[yonaskolb]

Interestingly this is what fileGroups is for. The name doesn't suggest it can be used for single files though. Are the options exposed by TargetSource required for your use case? If not, perhaps we just deprecate and rename fileGroups to files, while still supporting fileGroups for backwards compatibility.

[skofgar]

Oh really 🤦‍♂️, sorry I didn’t realize it.

I do have a use case where the include filter options would be really helpful.

I’ll look into fileGroups more and update this.