Implement attachment CollectionType using stimulus

templates/components/attachments.macro.html.twig

@@ -0,0 +1,20 @@
+{# Renders a editable list of all attachments. form is the Attachment CollectionType #}
+{% macro attachment_edit_list(form, part_mode = false) %}
+    {% form_theme form with ['Parts/edit/edit_form_styles.html.twig'] %}
+
+    {% import 'components/collection_type.macro.html.twig' as collection %}
+    <div {{ collection.controller(form, 'attachment.edit.delete.confirm') }}>
+        <table class="table table-striped table-sm" {{ collection.target() }}>
+            <tbody>
+            {% for attachment in form %}
+               {{ form_widget(attachment) }}
+            {% endfor %}
+            </tbody>
+        </table>
+
+        <button type="button" class="btn btn-success" {{ collection.create_btn() }} {% if part_mode and not is_granted('attachments.create', part) %}disabled{% endif %}>
+            <i class="fas fa-plus-square fa-fw"></i>
+            {% trans %}attachment.create{% endtrans %}
+        </button>
+    </div>
+{% endmacro %}