Base traits and types in Rust that implement ['Two-Round Threshold Schnorr Signatures with
FROST'](https://datatracker.ietf.org/doc/rfc9591/) generically for
[`Ciphersuite`] implementations.
For more details, refer to [The ZF FROST Book](https://frost.zfnd.org/).
See ciphersuite-specific crates, e.g. [`frost_ristretto255`](https://crates.io/crates/frost-ristretto255).