feat: removing hashicorp vault and external-secrets

[Ani1357]

Checklist

• Architecture Design Records have been added as adr/*.md and appended to list in adr/_index.md, if applicable.
• The values-schema.yaml file and test/** fixtures have been updated to reflect code changes, if applicable.
• The OpenApi Schema from redkubes/otomi-api project is compatible with definitions from values-schema.yaml file, if applicable.
• Helm releases are meeting otomi's baseline security policies, if applicable.
• Helm chart and helmfile changes are tested against upgrade scenario, if applicable.

[CasLubbers]

Vault and external secrets are removed from the UI only the helm charts still exist in the cluster is that correct?
Yes it was correct we can merge it :)