chore: update gtk4-output for the theme to set adwaita named colors

This is still a bit incomplete, and some apps use their own custom variables as well, for example the text editor.

Cargo.toml

@@ -150,6 +150,10 @@ members = [
 ]
 exclude = ["examples/design-demo", "iced"]
 
+[workspace.dependencies]
+dirs = "5.0.1"
+
+
 [patch."https://github.com/pop-os/libcosmic"]
 libcosmic = { path = "./" }