src: include uv.h in node_binding header

This was removed in https://github.com/nodejs/node/commit/3bb085dbad4d23030c731834e35b2804c8a50b23
but is needed by Electron on Windows, as otherwise compilation errors
will occur as a result of unknown libuv types.

PR-URL: https://github.com/nodejs/node/pull/31265


Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: David Carlier <devnexen@gmail.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>