Make it easier to select outdated tabs to be closed

[meridius]

Is your feature request related to a problem? Please describe.
The goal of this extension is to help users keep opened tabs separated to allow focus on single task. When multitasking it often happens (to me, at least) that user ends up with many groups of tabs opened, some of which they really don't need anymore. But since there are so many of them, it is hard for the user to target and close the correct ones (the oldest).

Describe the solution you'd like
It'd be great if user could toggle visibility of "age" of each tab (and tab group). The "age" could be how long (hours, days, weeks) since the tab was opened or last accessed.

The "age" could be displayed as:

• prefix in tab/group name either as icon or text.
• and/or color background of each tab/group

To make it easy to use, this feature should have a checkbox available in the Manage groups page.

Describe alternatives you've considered
The only alternative I can think of is to not have this feature.

Additional context
No screenshots made.