Distributed Key Generation - Dealer

This crate implements a dealer key generation protocol for the dkg crate's types. This provides a single point of failure when the key is being generated and is NOT recommended for use outside of tests.

This crate was originally part of (in some form) the dkg crate, which was audited by Cypher Stack in March 2023, culminating in commit 669d2dbffc1dafb82a09d9419ea182667115df06. Any subsequent changes have not undergone auditing.