Add elasticsearch config to magento env.php

Example of config.php with elasticsearch config:

<?php
return [

   // .... other configs
   'install' => [
        'date' => 'Tue, 11 Aug 2020 20:39:54 +0000'
    ],
    'system' => [
        'default' => [
            'catalog' => [
                'search' => [
                    'engine' => 'elasticsearch7',
                    'elasticsearch5_server_hostname' => 'localhost',
                    'elasticsearch7_server_port' => '9200'
                ]
            ]
        ]
    ]
];