feat: add Authorization header to BDRS request

[paullatzelsperger]

WHAT

adds a VerifiablePresentation containing the MembershipCredential to the Authorization header of a BDRS request.
Specifically, assuming we're using JWT-VPs, this will add a header:

"Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6I...."

In order to do that, the BdrsClient requires access to the SecureTokenService to create a self-issued ID token.
That SI token is then used to execute a PresentationQuery request to CredentialService, we "IATP ourselves".

The CredentialService's URL is resolved via a config parameter, and as a fallback, is resolved from the DID document.

WHY

Securing the directory API of the BDRS server.

FURTHER NOTES

A similar PR will come for the BDRS Server, to verify the auth header.

Closes # <-- insert Issue number if one exists

[paullatzelsperger]

@evegufy just added you as an FYI

[sonarqubecloud]

Quality Gate passed

Issues
2 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud