ad60fbf1

Author: Michael Lynch <git@mtlynch.io>

Committer: Michael Lynch <mtlynch@noreply.codeberg.org>

Return concrete authentication service (#421)

Expose the concrete authService from NewAuthService while retaining the
consumer-owned AuthService interface on ServerParams.

Reviewed-on: https://codeberg.org/mtlynch/little-moments/pulls/421