Password timeout

[ckpringle]

Story

As a user I want to enter my password only very occasionally and rely on the security of my computer to maintain my wallet privacy So that I don't have to enter my password every time I open the wallet

Acceptance Criteria

• [ ] Only after a period of time am I required to enter my single password. We accept that a users computer security is enough rather than need users to enter their password every time they open the application
• [ ] If session tokens have expired, user hasn't entered a password recently basically and that has timed out(?) then there is a way for the user to enter their single password to unlock the application

Tasks

• [ ] Explore and sketch
• [ ] Team and stakeholder review
• [ ] Visual Design
• [ ] Team review
• [ ] Etc.

Sketch

Additional details / background info

[notbot00]

https://github.com/vegaprotocol/vegawallet-desktop/issues/635 has been implemented, meaning the desktop wallet won't ask for passphrases multiple times. I'm not sure if it has a timeout / we want to improve the experience by adding some sort of a lock timeout to it.