Add userLogger event when a specific 2FA is selected
Summary
Currently, we log the success of a 2FA method:
[notice] totp2F verification for dwho
And we log when a second factor is required:
[info] Second factor required for dwho
But we don't log which 2FA was selected (manually or auto) by the user.
This could be useful in order to monitor the "success" rate of each 2FA type
Design proposition
Add a log in 2F::Engine::Defaut just before calling run
[info] Second factor totp2F selected for dwho