argocd-secret management isn't documented

[docwhat]

It is obvious that the argocd-secret object isn't being managed here.

This has been an annoying part of trying to manage all of ArgoCD from a kustomize application as recommended in the docs.

Can you add documentation explaining where and how argocd-secret is begin managed?

[christophkreutzer]

@alexmt @alexec Sorry for bothering you, but it seems you contributed most to that part (of this repo and the docs). I'm having the same issue, and fail to understand how the initial bootstrapping is done and why the secrets' values are not deleted (because in my case, if I handle it similarly, argocd-secret is OutOfSync and the diff is showing me it will erase all secret values).