Support Elasticsearch basic authentication

[sarab2009]

The Client.php construction doesn't handle the BasicAuthentication for Elasticsearch and ignores ES_USER and ES_PASSWORD environment variables.

Expected behavior
The construction function should be something like this:
` public function __construct(array $hosts, string $username, string $password, LoggerInterface $logger)
{
if (!empty($username) && !empty($password)) {
$this->client = ClientBuilder::create()
->setHosts($hosts)
->setBasicAuthentication($username, $password)
->build();
} else {
$this->client = ClientBuilder::create()
->setHosts($hosts)
->build();
}

    $this->logger = $logger;

    $namespace = getenv('ES_NAMESPACE');

    $this->namespace = $namespace ? $namespace . '_' : '';
}`

Screenshots

Environment (please complete the following information):

• OS name and version: Ubuntu 20.04.5 LTS x64
• PHP version: PHP 8.1.12
• Elasticsearch version: OpenSearch 2.3
• AdServer version: AdServer v2.1.1
• AdSelect version: AdSelect v1.2.2