convert views data page to use a filter

The views data page on D8 crashes my site (with a PHP memory of 700MB!!!).

Even if it did load, the kint output's JS would probably be really slow.

One way to tackle this would be to add a filter that does a partial text match of the array keys of the views data, and then shows you just what matches in the array.

Quick code I wrote to do this with a particular search string:

  $views_data =   \Drupal\views\Views::viewsData();
  $views_info = $views_data->get();
  
  $views_info_keys_filtered = preg_grep('@subscription@', array_keys($views_info));
  
  $views_info_filtered = array_intersect_key($views_info, array_fill_keys($views_info_keys_filtered, TRUE));
    
  ksort($views_info_filtered);
  dpm($views_info_filtered);

To help with searching, the initial display of the page could show the list of array keys.