Manage Operators console plugins with operators-install chart

[jtudelag]

operators-installer helm chart is great, but IMHO there is one missing feature regarding installing operators via OLM. Managing operator console plugins.

When installing operators via OLM using OpenShift UI, most of the times the operator console plugin is enabled by default, and taken care by OLM itself. Also most operators (at least Red Hat operators) come with their own console plugins.

When installing operators using GitOps, we are missing this functionality. I tried a simple approach here, and it worked. It is not idempotent at the moment, it will only take afew lines.

Also now that ArgoCD supports (since v2.10) a PostDelete hook, we could use that to do the cleanup of the plugin after uninstalling the operator.

@itewk leaving this here in case I have time to do a PR in the future.