Feature Request: support for dependencies downloading

[woj-tek]

Is your feature request related to a problem?

Yes, I have a chart that has dependencies and currently it's not possible to install.

Solution you'd like

Rancher should automatically install dependencies. helm install documentation mentions --dependency-update option which should solve the issue without having to deal with dependency update or dependency build (as mentioned in the docs: https://ranchermanager.docs.rancher.com/v2.7/how-to-guides/new-user-guides/deploy-apps-across-clusters/fleet#helm-chart-dependencies)

Alternatives you've considered

One could put the chart tgz file in the repo, but it's not really feasible for external charts/repositories...

Anything else?

There is rancher/fleet#250 but it was closed as "solved" (by adding documentation blurb that it doesn't work, which well... doesn't solve anything...)