[F] Protect file with password

[mcordoba]

🚀 Feature Proposal

It would be useful the possibility to protect the file with a password as you can do already on excel files.

Motivation

It is useful for excels with personal data that must be protected.

[zurmokeeper]

@mcordoba Is it possible to set password encryption when directing out excel?

[mcordoba]

I mean an excel password and not a zip password or similar as once decompressed the file may be saved on hard disk without protection while with an excel password the file is always protected.

I don't know how to achieve this with the output data. Any idea?