Allow compatibility with Smart Date module

Problem/Motivation

Smart date module date views filter plugin adds granularity to be able to filter by year. The Smart Date plugin (which I think it is wrongly named "date") collides with this module's plugindate_with_more_options, and as a result there is no way for using the granularity provided for the Smart Date module in a views filter.

Steps to reproduce

• Install both, Smart Date module and Views Year Filter
• Create a content type and add a smart date field
• Create a view filtering by, for example, Date start
• At this point there will be no options for granularity
• Save the view and try to filter by the content's year
• No results will be shown

Proposed resolution

Since changing the smart date functionality will be more tedious, as a workaround I propose to check the provider in this module's hook views_year_filter_views_plugins_filter_alter, and avoid the ViewsYearFilterDate implementation if the provider is the smart_date.

function views_year_filter_views_plugins_filter_alter(&$info) {
  if (isset($info['date']) && $info['date']['provider'] != 'smart_date') {
    $info['date']['class'] = ViewsYearFilterDate::class;
  }
  if (isset($info['datetime'])) {
    $info['datetime']['class'] = ViewsYearFilterDatetime::class;
  }
  if (isset($info['search_api_date']) && \Drupal::moduleHandler()->moduleExists('search_api')) {
    $info['search_api_date']['class'] = ViewsSearchApiYearFilterDate::class;
  }
}

Remaining tasks

User interface changes

API changes

Data model changes