libnm,core: Add ConnectivityUri property and accessors
So that applications like GNOME Shell can hit the same URI to show the captive portal login page.
This is the first step towards fixing https://gitlab.gnome.org/GNOME/gnome-shell/issues/1313
So that applications like GNOME Shell can hit the same URI to show the captive portal login page.
This is the first step towards fixing https://gitlab.gnome.org/GNOME/gnome-shell/issues/1313