Plus circle fill

<svg class="bi bi-plus-circle-fill" width="1em" height="1em" viewBox="0 0 16 16" fill="currentColor" xmlns="http://www.w3.org/2000/svg">
  <path fill-rule="evenodd" d="M16 8A8 8 0 1 1 0 8a8 8 0 0 1 16 0zM8.5 4a.5.5 0 0 0-1 0v3.5H4a.5.5 0 0 0 0 1h3.5V12a.5.5 0 0 0 1 0V8.5H12a.5.5 0 0 0 0-1H8.5V4z"/>
</svg>