Settings Tray 1.0.0

First stable release of Settings Tray as a contributed project, extracted
from Drupal core under the module removal process.

Full commit history is preserved across both historical core paths,
core/modules/outside_in and core/modules/settings_tray, back to the
module's creation in issue #2753941.

Supports Drupal ^11.4 || ^12.

Refs: https://www.drupal.org/node/3576667