Make a tab group remember the sitze/docking status.

[CeaselessWatcher]

I've collected a "Socials" tab group on my Firefox and was wondering if it was possible to make this particular tab group remember to dock to the side of the screen in the mobile-optimized aspect ratio of most social sites.

IDK if this is even possible, or if implementing it would constitute a security risk, but it would be a neat feature to have.

Intended functionality: Make tab groups individually remember the following:

• last used aspect ratio (height/width)
• last used docking form (edge/corner of screen)