feat(ext/node): add support for named curves in crypto.generateKeyPair[Sync]()

[iuioiua]

Towards fixing #21761

[jareddr]

Hi, I'm not affiliated with the project at all, but I just posted a related issue: #22879

I still don't fully understand my issue as I'm way out of my depth the the cryptography here, but I'm hoping your PR will fix my issue as well.

What I'm seeing is that the eno_node/internal/crypto/keys.ts code is using the p256 algorithm as seen in the return of the op_node_create_private_key function in this block

export function createPrivateKey(key) {
  const { data, format, type } = prepareAsymmetricKey(key);
  const details = op_node_create_private_key(data, format, type);
  const handle = setOwnedKey(copyBuffer(data));
  return new PrivateKeyObject(handle, details);
}

Hoping your changes will allow this function to create a private key object that uses prime256v1, fingers crossed. Thanks!

[littledivy]

LGTM! Please also add secp256r1. (prime256v1, secp256r1 and NIST p-256 are the same)

[iuioiua]

Ah, good point. I've added that, prime384v1 and secp384r1 too.