Inversion of skip?

[acro5piano]

Hi, thank you for the great library again.

I would like to propose a new API only, which is the inversion of skip.

The use case: We have a database table and GraphQL schema has "virtual" columns.

GraphQL:

type User {
  id: ID!
  firstName: String
  lastName: String
  fullName: String
}

Database:

- users:
  - id
  - firstName
  - lastName

Resolver:

const UserResolver = {
  lastName(root: User) {
    return `${user.firstName} ${user.lastName}`
  }
}

In this case, it would be really helpful if we have only

fieldsToList(info, {
  only: ['id', 'firstName', 'lastName'],
})

If you are okay, I'll create a PR for this.

Thanks

[Mikhus]

Sounds great, I was missing this project for a while, so if it is still n open proposal - P>R is welcomed