validateAuthnResponse
Validates an Authentication Response from the Wallet, where input is a map of POST parameters received.
Validates an Authentication Response from the Wallet, where input is either:
a URL, containing parameters in the fragment, e.g.
https://example.com#id_token=...a URL, containing parameters in the query, e.g.
https://example.com?id_token=...parameters encoded as a POST body, e.g.
id_token=...&vp_token=...
Validates AuthenticationResponseParameters from the Wallet