Switch to fork of ed448

[StackOverflowExcept1on]

There is fork that also has no_std support, fixed warnings, etc: https://github.com/mikelodder7/Ed448-Goldilocks

[conradoplg]

I understand the desire but we'd like to avoid pointing to less popular forks (and the original crate was already not too mainstream). Ideally crate-crypto/Ed448-Goldilocks#35 would be the best for us.

I'll leave this open while we consider the options, thanks!

[StackOverflowExcept1on]

I don't know what needs to happen for https://github.com/crate-crypto/Ed448-Goldilocks to become part of RustCrypto... They have a lot of warnings when building project, some things are not fully implemented. Even if it becomes RustCrypto, the API will probably be different.

[StackOverflowExcept1on]

@conradoplg Technically ed448-goldilocks-plus 0.16.0 is same as RustCrypto/elliptic-curves/ed448-goldilocks: https://github.com/RustCrypto/elliptic-curves/blob/bc0960f8b4259026a96ae3c85c7e420d9f6d8a8b//README.md?plain=1#L87. Also ed448-goldilocks-plus 0.16.0 from crates.io requires rand_core 0.6 rather than 0.9 and we could use it to make FROST #![no_std] library without waiting for all the RustCrypto crates on new version of rand_core and with the new MSRV policies.