Add Got generator

[HosseinAgha]

This is more of a feature request than an issue.

I think your library has a great potential to be used in serverside typescript-node applications in addition to client-side apps.
Axios is a browser-oriented library while Got is a more server-oriented one. It has a good community and numerous advantages over Axios (and others) on server-side, take a look at the comparison.

I know we can use mutator function but I still think having a server-side client generator is a big advantage for orval.
Many thanks for this awesome library. ❤️