Add helper method for getting field type and widget type of fields

> $fields = \Drupal::service('value_revisions.settings')->fieldsInfo($entity);
= [
   "title" => [
     "field_type" => "string",
     "widget_type" => "string_textfield",
   ],
   "field_addresses" => [
     "field_type" => "entity_reference",
     "widget_type" => "inline_entity_form_complex",
   ],
   "field_aka" => [
     "field_type" => "string",
     "widget_type" => "string_textfield",
   ],
   "field_alternate_names" => [
     "field_type" => "string",
     "widget_type" => "string_textfield",
   ],
   "field_email_addresses" => [
     "field_type" => "email",
     "widget_type" => "email_default",
   ],
   "field_industries" => [
     "field_type" => "list_string",
     "widget_type" => "options_buttons",
   ],
   "field_naics_codes" => [
     "field_type" => "string",
     "widget_type" => "string_textfield",
   ],
   "field_phone_numbers" => [
     "field_type" => "telephone",
     "widget_type" => "telephone_default",
   ],
   "field_related_actors" => [
     "field_type" => "entity_reference",
     "widget_type" => "entity_reference_autocomplete",
   ],
   "field_tags" => [
     "field_type" => "entity_reference",
     "widget_type" => "",
   ],
   "field_visas" => [
     "field_type" => "entity_reference",
     "widget_type" => "entity_reference_autocomplete",
   ],
   "field_websites" => [
     "field_type" => "link",
     "widget_type" => "link_default",
   ],
 ]

When a widget is blank, as in this example for tags, that is because at some point after configuring Value Revisions for the field, the decision was made not to show the field on the form.

well this worked great anyway. call it fixed imo. well done.