Sync all secrets of a key vault instead of referencing each one separately

[larsf96]

Describe the solution you'd like
I would like to have a possibility to sync all secrets of a key vault to a Kubernetes secret without the need to specify each secret in the objects property in the SecretProviderClass.
This would make it a lot easier to add new secrets as you only have to add them to the key vault and they will be synced with Kubernetes automatically.