Mints an ID Token for a client, with the claims its scope and claims
request ask for, signed by its registered algorithm (on libuv's thread pool
where slow) and encrypted where it registered that.
Parameters
base: any
the authorization server's base URL
opts: any
the grant's facts: client_id, username or user,
nonce, scope, claims, acr, amr, auth_time, session_id,
code, access_token, state and the rest
Mints an ID Token for a client, with the claims its scope and claims request ask for, signed by its registered algorithm (on libuv's thread pool where slow) and encrypted where it registered that.