Issue #3502614: Add a service user to settings and an action to switch to it

...ins/eca/commerce/events/eca_commerce_filter_conditions.md

...lugins/eca/commerce/events/eca_commerce_post_mail_send.md

...s/eca/commerce/events/eca_commerce_price_number_format.md

...ommerce/events/eca_commerce_referenceable_plugin_types.md

...plugins/eca/content/events/content_entity_bundlecreate.md

...plugins/eca/content/events/content_entity_bundledelete.md

...lugins/eca/content/events/content_entity_viewmodealter.md

...ins/eca/helper/actions/eca_helper_form_field_set_value.md

docs/plugins/eca/helper/actions/eca_helper_http_request.md

docs/plugins/eca/metatag/events/eca_metatag_alter.md

docs/plugins/eca/metatag/events/eca_metatag_tags.md

...ns/eca/misc/events/drupal_block_content_get_dependency.md

docs/plugins/eca/misc/events/drupal_build.md

...eca/misc/events/drupal_file_upload_sanitize_name_event.md

...ins/eca/misc/events/drupal_select_page_display_variant.md

toc/plugins.yml