The request it for a Grouped Tabs mechanism, similar to what Chrome introduced. It lets you create a "group" of adjacent tabs, where groups can have a name and color, displayed next to it.
If you like it and would like to see it implemented (or at least die peacefully in VSCode's backlog), please upvote it in the VSCode's repo issues.
The link is: https://github.com/microsoft/vscode/issues/100335
Sorry if this violates any rules.