Hedged nonce procedure

[davxy]

Provide procedure to support a hedged variant of

ark-vrf/src/utils/common.rs

Line 156 in bf2d1cf

pub fn nonce_rfc_8032<S: Suite>(sk: &ScalarField<S>, input: &AffinePoint<S>) -> ScalarField<S> {

Ref: https://www.ietf.org/archive/id/draft-irtf-cfrg-det-sigs-with-noise-03.html#name-hedged-eddsa

paritytech/polkadot-sdk#7669 (comment)