Helm: Autogenerate a Helm README

[ardelato]

Description

We recently added a Helm chart for Vigilo. It would be nice if we created a README with helpful configuration options like other Helm charts - Argo CD Helm Chart.

That said it would be burdensome to maintain the README ourselves, which is why other folks use helm-docs to autogenerate said READMEs.

To Do:

• Integrate helm-docs to autogenerate the Helm chart README
  • Use a README.md.gotmpl to customize the README

[ardelato]

We'll want to add a note about modifying the imagePullSecrets kubernetes/kubernetes#85332