[feature] save all images referenced while saving helm chart

[wcrum]

Is this Feature/Enhancement related to an Existing Problem? If so, please describe:

• This feature is not related to any existing problem.

Describe Proposed Solution(s):

• While adding Helm chart to the Hauler, expose a flag such as hauler store add chart [flags] --add-images in which it unpacks and templates base helm chart and add images to image store.

Describe Possible Alternatives:

• Manually do it?

• Currently if Hauler users want to save images associated to helm charts they have two first save the helm chart, then download the helm chart separately and try to pull images from the tgz.

# example getting helm chart and images
hauler store add chart hauler-helm --repo oci://ghcr.io/hauler-dev
helm pull oci://ghcr.io/hauler-dev/hauler-helm
helm template hauler hauler-helm-1.1.1.tgz| grep image: | sed -e 's/[ ]*image:[ ]*//' -e 's/"//g' | sort -u
> hauler/hauler-debug:1.1.1
> hauler/hauler:1.1.1
> rancher/kubectl:v1.31.3

Reference: https://stackoverflow.com/questions/60892265/extract-docker-images-from-helm-chart

[zackbradys]

hey @wcrum... I'm moving this out of v1.2.0 since the PR was closed. Hope you are able to reopen it and contribute this feature to the project!