[Bug] arguments for directives are lost when using nautilus

[sGy1980de]

The introspection and query planner is unaware about the arguments for directives. So with nautilus it's currently impossible to use the built-in directives like @include or @skip, since the query planner complains about the if argument being unknown. The introspection query clearly shows the problem.

Version affected: v0.1.19

Expected result:

{
  "directives": [
    {
      "name": "deprecated",
      "description": "Marks an element of a GraphQL schema as no longer supported.",
      "locations": [
        "FIELD_DEFINITION",
        "ENUM_VALUE"
      ],
      "args": [
        {
          "name": "reason",
          "description": "Explains why this element was deprecated, usually also including a suggestion\nfor how to access supported similar data. Formatted in\n[Markdown](https://daringfireball.net/projects/markdown/).",
          "type": {
            "kind": "SCALAR",
            "name": "String",
            "ofType": null
          },
          "defaultValue": "\"No longer supported\""
        }
      ]
    },
    {
      "name": "include",
      "description": "Directs the executor to include this field or fragment only when the `if` argument is true.",
      "locations": [
        "FIELD",
        "FRAGMENT_SPREAD",
        "INLINE_FRAGMENT"
      ],
      "args": [
        {
          "name": "if",
          "description": "Included when true.",
          "type": {
            "kind": "NON_NULL",
            "name": null,
            "ofType": {
              "kind": "SCALAR",
              "name": "Boolean",
              "ofType": null
            }
          },
          "defaultValue": null
        }
      ]
    },
    {
      "name": "skip",
      "description": "Directs the executor to skip this field or fragment when the `if` argument is true.",
      "locations": [
        "FIELD",
        "FRAGMENT_SPREAD",
        "INLINE_FRAGMENT"
      ],
      "args": [
        {
          "name": "if",
          "description": "Skipped when true.",
          "type": {
            "kind": "NON_NULL",
            "name": null,
            "ofType": {
              "kind": "SCALAR",
              "name": "Boolean",
              "ofType": null
            }
          },
          "defaultValue": null
        }
      ]
    }
  ]
}

Current result:

{
  "directives": [
    {
      "args": [],
      "description": "Marks an element of a GraphQL schema as no longer supported.",
      "locations": [
        "FIELD_DEFINITION",
        "ENUM_VALUE"
      ],
      "name": "deprecated"
    },
    {
      "args": [],
      "description": "Directs the executor to include this field or fragment only when the `if` argument is true.",
      "locations": [
        "FIELD",
        "FRAGMENT_SPREAD",
        "INLINE_FRAGMENT"
      ],
      "name": "include"
    },
    {
      "args": [],
      "description": "Directs the executor to skip this field or fragment when the `if` argument is true.",
      "locations": [
        "FIELD",
        "FRAGMENT_SPREAD",
        "INLINE_FRAGMENT"
      ],
      "name": "skip"
    }
  ]
}

[sGy1980de]

This issue is reflected in upstream: nautilus#152