group tabs in the same container and collapsable in vertical tabs

[jason919]

1.  Group all tabs in the same container in a group, currently, they are scattered all over places. Or at least order the tabs by container
2. if we can group the tabs together for a containers, then make it collapsible and expandable.
3. When I re-open or move a tab to a container, it duplicates the tab without closing the previous tab, this becomes a trouble, when I select 10 tabs and move them to a new container, now suddenly I have 20 tabs and close old tabs one by one

These features are already in Brave browser.

[Jon]

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