Allow for import of macOS Keychain passwords and safe notes.
While Keychain passwords can be imported into the new macOS Passwords app and then exported as csv, this is not possible for safe notes, which some users have made extensive use of.

Apple's discontinued support of safe notes is the reason why I wanted to switch to Proton Pass. But I cannot possibly migrate hundreds of safe notes by hand, each time typing in the user password.

The appears to have been a script to do the extraction, but it is no longer accessible on the web:
https://community.bitwarden.com/t/import-from-mac-keychain-to-bitwarden/8240/3