Why?
Because there’s a nice app called Termux, which lets you do some Linux thing on Android. It has SSH-capability thus I would like to utilize SSH keys on my Bitwarden vault.
How?
There’s a exist solution for PGP/SSH keys in OpenKeychain, OkcAgent (the adapter to communicate between Termux and OpenKeychain) and its agent (that install to Termux). So the Bitwarden Android client should be able to create something similar like this.