Issue #3249211: Add composer.json file and declare dependencies

{

  "name": "drupal/xnttdb",

  "description": "External Entities Database plugin",

  "type": "drupal-module",

  "homepage": "https://www.drupal.org/project/xnttdb",

  "authors": [

    {

      "name": "Valentin Guignon",

      "homepage": "https://www.drupal.org/u/guignonv",

      "role": "Maintainer"

    }

  ],

  "support": {

    "issues": "https://www.drupal.org/project/issues/xnttdb",

    "source": "https://git.drupalcode.org/project/xnttdb"

  },

  "license": "GPL-2.0+",

  "minimum-stability": "dev",

  "repositories": {

    "drupal": {

      "type": "composer",

      "url": "https://packages.drupal.org/8"

    }

  },

  "require": {

    "drupal/external_entities": "^2.0@alpha",

    "drupal/dbxschema": "^1.0@dev"

  }

}