Allow customize entity row attributes on index page

Author: zorn-v

templates/crud/index.html.twig

@@ -139,7 +139,7 @@
         {% block table_body %}
             {% for entity in entities %}
                 {% if entity.isAccessible %}
-                    <tr data-id="{{ entity.primaryKeyValueAsString }}">
+                    <tr data-id="{{ entity.primaryKeyValueAsString }}" {% block entity_row_attributes %}{% endblock %}>
                         {% if has_batch_actions %}
                             <td class="batch-actions-selector">
                                 <div class="form-check">