[Feature Request]: FROST support

[Sami32]

https://datatracker.ietf.org/doc/rfc9591/
https://developer.blockchaincommons.com/frost/developers2/

[benma]

FROST is not ready for prime time yet. We probably need to wait for at least:

• https://github.com/BlockstreamResearch/bip-frost-dkg
• a BIP for FROST
• implementation in libsecp256k1 like musig