This is a rather large PR which updates the async branch to have all the
database methods as an async fn.
Some iter/map logic needed to be changed to a stream::iter().then(), but
besides that most changes were just adding async/await where needed.
Note: The original Vaultwarden implementation of Bitwarden Send would always
hide the email address, while the upstream implementation would always show it.
Upstream PR: https://github.com/bitwarden/server/pull/1234
BlackDex
Fabian Thies
Daniel García
Jeremy Lin