The goal of this extension is to provide a more convenient way to repeatedly switch between tab groups without using an extra dropdown menu. Other features currently implemented:
* Creating, closing and renaming tab groups from the bar's context menu. Renaming can also be done by double-clicking the group's tab.
* Move all tabs from a particular domain to a chosen tab group. Helps with organizing.
* The bar can be toggled with an Alt+G keyboard shortcut.
* Option to have the bar be visible only when the mouse is over the browser's toolbar area.
Newer version with some bug fixes can be obtained at https://github.com/IIUJ-KrzysztofDawidowicz/Tab-Group-Bar/releases
Awaiting full review right now.