List Voices to DOM

async function voicesListToDOM(client: Cartesia): Promise<void> {
  /** Fetch voices and display them in a <ul> element. */
  const ul = document.createElement('ul');

  for await (const voice of client.voices.list({ limit: 20 })) {
    const li = document.createElement('li');
    li.textContent = `${voice.name} (${voice.language})`;
    ul.appendChild(li);
  }

  document.body.appendChild(ul);
}