Feature Request: Make OpenBao a default Secrets backend

[jessebot]

Describe the feature you'd like, and why

I want to offer official support of OpenBao as the primary secrets backend, instead of using Bitwarden. I still want to have Bitwarden as an option, because it's useful for smaller home labs, but OpenBao would give us the power to more comfortably separate sensitive infra data from a personal password manager.

Describe alternatives you've considered, if any

We want will also support Vault, but it would be a secondary less supported option, because Vault, along with Hashicorp is now owned by IBM, and we remember what happened with centos.

Additional context

• We'll need to make sure the Argo CD app, small-hack/argocd-apps:demo/openbao works and graduate it out of demo.

• We need to test the new external secrets provider with each major app that uses bitwarden right now:

  • matrix
  • nextcloud
  • home assistant
  • zitadel
  • vouch

[jessebot]

We've add OpenBao as a default demo app here: #286

[jessebot]

#290 helps a bit with our goals here as it makes Bitwarden optional for our ArgoCD object :)