Align the verifiable credentials to be compliant with current VCDM 1.1

[yshyn-iohk]

Is this a regression?

No

Description

Historically, the VC (JSON, JSON-LD, JWT) was built using the draft of VCDM, and the field schemaId was added to link the VC schema to the VC instance.
According to VCDM 1.1 (not draft), the schema can be added to the VC as a credentialSchema field.

So, the schemaId must be replaced to the credentialSchema object in all VC types and APIs

https://www.w3.org/TR/vc-data-model/#data-schemas

Please provide the exception or error you saw

VC contains the `schemaId` field instead of `credentialSchema`

Please provide the environment you discovered this bug in

local

Anything else?

No response