Add support to update the existing DID with the new VDR key type to support creation of the resources in the cloud-agent

[yshyn-iohk]

Proposed feature

In the scope of the Catalyst Proposal: VDR for the Identus in the Cardano, we need to add support to update the existing DID with a new key type VDR using the DID Registrar API

Feature description

As a user, I want to update my existing DID and add a new key type, VDR, to be able to manage VDR resources

Anything else?

No response