[Request] Customize conditions for temporary permissions to expire automatically

[indigoHatter]

Several ideas for when a temporary permission should expire:

• On tab/window close
• After 30mins, 1hr, 12hrs, 24hrs, 72hrs, or 1wk. (Further allow custom times for default, as well as per site).
• Once tab is no longer in focus/active
• Once user is no longer on the site (this could behave across the entire browser, rather than per tab, and detect if the site is no longer open in any opened tabs)

Just some thoughts. If I could only pick two to implement, I'd pick the first two.