Feature/72 spec update credential format7
Regarding Issues on Credential format, we propose with @hfaure-geors a Merge Request.
Main changements :
- input compliance
- output compliance
- id and type format
- ssi compliance (change presentation which does not really exist in W3C to verifiable presentation)
- include challenge and domain to proof of verifiable presentation to prenvent replay attacks
- ...
MR need to be update for two warnings (pararah which deals with sri, and paragraph which deals with self description)