title: How to clear text in MessageKit inputBar after Pressing Send in inputBarAccessoryView
body: <p>I'm building a real time chat application. Where I use message kit and inputBarAccessoryView library to make a conversation between 2 users.</p>
  <p>I've used -</p>
  <pre><code>extension ChatViewController: InputBarAccessoryViewDelegate {
   func inputBar(_ inputBar: InputBarAccessoryView, didPressSendButtonWith text: String) {
    // message sending logic
   }
  }
  </code></pre>
  <p>this delegate function but when I pressed send button the message is sent but the text is still remain in the inputBar it is not getting cleared.</p>
  <p>How can I clear the inputBar text when user click the Send Button?</p>