crypto: add keyObject.export() 'jwk' format option

Adds [JWK](https://tools.ietf.org/html/rfc7517) keyObject.export format
option.

Supported key types: `ec`, `rsa`, `ed25519`, `ed448`, `x25519`, `x448`,
and symmetric keys, resulting in JWK `kty` (Key Type) values `EC`,
`RSA`, `OKP`, and `oct`.

`rsa-pss` is not supported since the JWK format does not support
PSS Parameters.

`EC` JWK curves supported are `P-256`, `secp256k1`, `P-384`, and `P-521`

PR-URL: https://github.com/nodejs/node/pull/37081


Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>