Crypto generate key pair

[sirenkovladd]

What does this PR do?

Fixes #3877
add method generateKeyPair and generateKeyPairSync to node:crypto

• Documentation or TypeScript types (it's okay to leave the rest blank in this case)
• Code changes

How did you verify your code works?

• I wrote automated tests

• I checked the lifetime of memory allocated to verify it's (1) freed and (2) only freed when it should be
• I or my editor ran zig fmt on the changed files
• I included a test for the new code, or an existing test covers it
• JSValue used outside outside of the stack is either wrapped in a JSC.Strong or is JSValueProtect'ed

• I ran make headers to regenerate the C header file

[Grandnainconnu]

Will this be soon merged?

[thecrabcode]

Any news here?