Add vault timeout option: Browser window closed

I noticed today that we are missing one option for the vault timeout feature in the browser extension window. The ability to execute the vault timeout action when “current browser window is closed”

Scenario: Windows sign-in is shared by multiple users and all users have separate bitwarden accounts. Users have own browser profiles that allow for separate extensions, but currently the bitwarden browser extension only locks the vault when all separate browser windows are closed → Add option of choosing “closing browser window” This way users can be certain that the vault has been locked when closing down their profile.