support middleware

[beeplin]

graphql-nexus/nexus#64 discusses the possibility of introducing middleware in nexus type definition to facilitate the re-usability of auth/validation logics in resolvers. Similarly, it would be nice if nexus-primsa could support middleware, maybe like this:

const Query = prismaObjectType({
  name: 'Query',
  definition(t) {
    t.prismaFields(['user', { name: 'users', middleware: [middleware1, middleware2] }])
  },
})

[Weakky]

As nexus-prisma is just a wrapper around nexus, once nexus implements it, all the middleware will magically be able for nexus-prisma as well 🙂