- Add ClientTagMetadata struct with parsing helpers and documentation - Append Damus client tags when posting across app, share, and drafts flows - Gate the behavior behind a new publish_client_tag setting (default on) Changelog-Added: Add client tag to published events to identify Damus Ref: https://github.com/damus-io/damus/issues/3323 Signed-off-by: alltheseas <alltheseas@users.noreply.github.com>