Enables sending of SMS messages through Clicksend.
Based on official Clicksend API documentation https://developers.clicksend.com/docs/rest/v3/?shell#send-sms
composer install verifiedit/clicksend-sms
$messages = new \Verifiedit\ClicksendSms\SMS\Messages();
$messages->add((new \Verifiedit\ClicksendSms\SMS\Message('Test'))->setTo('+61411111111'));
$client = \Verifiedit\ClicksendSms\ClicksendClient::make('[email protected]', 'secret')
$sms = new \Verifiedit\ClicksendSms\SMS\SMS($client);
$response = $sms->send($messages);