get Supported Credentials
Fetch the issuer's advertised credential configurations (credential_configurations_supported) as SDK-native SupportedCredentials.
Lets callers discover a configuration id at runtime — e.g. find the PID via SupportedCredential.isPid — instead of hardcoding it, then pass SupportedCredential.configurationId to issueByConfigurationId.
Throws
if the issuer metadata cannot be resolved.