Issue #3173249 by owenbush, MrPaulDriver: Allow Registrants to be Versionable and Add Status

...events_registration/recurring_events_registration.install

..._events_registration/recurring_events_registration.module

...egistration/recurring_events_registration.post_update.php

...s_registration/recurring_events_registration.services.yml

...s/recurring_events_registration/src/Entity/Registrant.php

...ing_events_registration/src/Form/RegistrantDeleteForm.php

...recurring_events_registration/src/Form/RegistrantForm.php

...curring_events_registration/src/RegistrantListBuilder.php

...rring_events_registration/src/Routing/RouteSubscriber.php

...events_views/config/optional/views.view.registrations.yml