[Feature Request] Does egg will support specific NODE_OPTIONS params in the future?
## Background
I want to specify some NODE_OPTIONS params like --max-http-header-size to adapt large size cookie, larger than 8KB. But I cannot find anything help in the document, will egg support this feature?

## Additional context
I know it is un-normal that our site has such a large cookie, but it has run more than 5 years and no one can change this situation. for now, other App powered by express and koa has already finish the update(via --max-http-header-size), and my egg.js app seems cannot do this, pls help :(
