Including files in a helm package - is this possible?

[msmithson-roku]

Helm allows you to load files using .Files.get - https://helm.sh/docs/chart_template_guide/accessing_files/

I can't work out a way to include files in the chart root folder using helm_package (other than Chart.yaml or values.yaml). Without this rules_helm can't be used with chart that use .Files.get as this is not allowed to access files in the templates folder.

Is there a way to do this that I can missing?