Allow access to secret and QR code

Being able to access the secret/seed and even a QR code after adding an account would be a great improvement to Tofu Authenticator. It would allow users to freely and easily migrate their accounts to other TOTP apps, if desired.

One iOS TOTP app that allows this (including the QR code) is Raivo OTP.

[Shadowspear123]

This would be a great feature! Would love to see it on a future release.