fs: expose copy-on-write flags for fs.copyFile()

This commit exposes the UV_FS_COPYFILE_FICLONE and
UV_FS_COPYFILE_FICLONE_FORCE flags added in libuv 1.20.0.

Fixes: https://github.com/nodejs/node/issues/19152
PR-URL: https://github.com/nodejs/node/pull/19759
Fixes: https://github.com/nodejs/node/issues/19152


Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>