Add documentation of `node-rebuild` for node22

[william-des]

The @citizenfx/node-rebuild tool has been mentioned several times since the introduction of Node 22, but I haven't seen any official documentation explaining what it does or when it's supposed to be used.

From what I understand, it is meant to recompile native Node.js modules (using node-gyp) to ensure compatibility with the version of Node bundled in FXServer.

I think it would be usefull to mention this tool in the javascript scripting manual