Allow custom instances of Additional HTML, Icon Size, etc.

At the moment the only additional html that can be used is the one from settings, despite the fact that it can be edited that still limited having one additional html used over all website.

With few changes we can pass custom settings from another module into addtoany

Proposed changes:

function addtoany_create_buttons($url = NULL, $title = NULL, $config = NULL) {
  global $base_path;

  if(is_null($config)){
    $config = \Drupal::config('addtoany.settings'); 
  }

function addtoany_create_node_buttons($node, $config = NULL) {
  $url = isset($node) ? $node->url('canonical', array('absolute' => true)) : NULL;
  $title = isset($node) ? $node->label() : NULL;
  return addtoany_create_buttons($url, $title, $config);
}

This way in a custom module we can use something like this to pass different settings:

function my_custom_module_ENTITY_TYPE_view(array &$build, EntityInterface $node, EntityViewDisplayInterface $display, $view_mode) {
  if ($display->getComponent('addtoany') && $node->isPublished()) {
    $config = \Drupal::config('my_custom_module.settings'); 
    $build['addtoany'] = array(
      '#addtoany_html' => addtoany_create_node_buttons($node, $config),
      '#theme' => 'addtoany_standard',
    );
  }
}