Make adding MFA an explicit option on create? (Cursive)

[ApprenticeofEnder]

I didn't know this thing supported MFA up until I opened up the menu and tried to copy the MFA code. Honestly, the current process could use some tweaks, since you need to add an OTP URL to the note somewhere without it really telling you until you try to copy an MFA code.

I think we could add an optional field to the creation menu for passing in the MFA secret (or the URL, depending), some functionality to make an OTP URL out of a secret, and a dedicated attribute in the PasswordEntry file for the OTP URL.

So in summary:

• Add OTP URL/secret field to creation menu
• Add functionality to generate URL from a secret
• Add attribute for OTP URL specifically
• Add and modify tests as needed

Does this sound useful?

[ApprenticeofEnder]

And similar to #333, this would also need some retrofitting provisions.