Option to disable `*Connection` operations

[angrykoala]

Currently, read and aggregate options in query are available to disable some operations. However, it is not possible to disable Connection operations whilst keeping the Entity read operations.

For example:

type Movie @node {
    title: String!
}

Add an option to disable the operation moviesConnection from the generated queries

type Query {
  movies(limit: Int, offset: Int, sort: [MovieSort!], where: MovieWhere): [Movie!]!
-    moviesConnection(after: String, first: Int, sort: [MovieSort!], where: MovieWhere): MoviesConnection!
}