WARNING: This was only tested with GNOME 3.38. No plan on working around with GNOME 40+ and libadwaita.
This will add black and highlight outline to the window decoration for GNOME desktop/GTK apps, it will look similar to how MacOS windows edge look like. Should work well with Adwaita theme.
Rounded teriminal corner is not included, it is from https://github.com/owozsh/adwaita-rounded