[Feature Request] Add tab suspension features like The Great Suspender

[Darthagnon]

Is your feature request related to a problem? Please describe.
The Great Suspender was recently declared malware after it was sold and a rogue developer took it over. It was a good extension that replaced idle pages with lite pages until they were selected. This feature is already built in to Tab Session Manager: when we restore a session, all pages are replaced with a lite Tab Session Manager page until selected. What if Tab Session Manager could do this while we use the browser? Then it would replace The Great Suspender, and we can use 1 extension instead of 2.

Describe the solution you'd like
A setting to enable a permanently available highlighted "Current Session" in the session list in Tab Session Manager. Current Session lists the current session and which tabs are sleeping (i.e. unloaded and replaced with Tab Session Manager page) and which are active. It would need a configurable timer in Settings for how long to wait for inactivity before suspending a tab. Perhaps it could become a hi the

Describe alternatives you've considered
Alternatively, I currently use The Marvellous Suspender with a slight overlap of functions with Tab Session manager, to save on RAM.

Screenshot of concept: