Include drupal:views as dependency b/c of lb_claro_theme_registry_alter

Problem/Motivation

lb_claro_theme_registry_alter() relies upon Drupal core views module's hook_theme implementation to re-use its theme registry for the following new items

  $theme_registry['views_view__media_library__widget'] = $theme_registry['views_view'];
  $theme_registry['views_view__media_library__widget']['template'] = 'views-view--media-library';
  $theme_registry['views_view__media_library__widget']['path'] = $lb_claro_path;

  $theme_registry['views_view__media_library__widget_table'] = $theme_registry['views_view'];
  $theme_registry['views_view__media_library__widget_table']['template'] = 'views-view--media-library';
  $theme_registry['views_view__media_library__widget_table']['path'] = $lb_claro_path;

  $theme_registry['views_view_unformatted__media_library'] = $theme_registry['views_view_unformatted'];
  $theme_registry['views_view_unformatted__media_library']['template'] = 'views-view-unformatted--media-library';
  $theme_registry['views_view_unformatted__media_library']['path'] = $lb_claro_path;

Steps to reproduce

* Install Drupal using the minimal (without views module)
* Enable the LB Claro module
* Observe php notices

Proposed resolution

Add drupal:views as a module dependency to issue necessary theme registry items are present.

Remaining tasks

* Patch

User interface changes

API changes

Data model changes