It's on their feature roadmap [0] and already supported by the full Bitwarden app (as a paid feature) [1].

0: https://bitwarden.com/products/authenticator/#:~:text=New%20... - "New features on the roadmap include import, syncing to Bitwarden accounts, push-based 2FA, and account recovery"

1: https://bitwarden.com/pricing/#:~:text=Integrated%20Authenti...