Draft: system: Adding region & language page to the system panel
requested to merge gautham_x/gnome-control-center:gsoc23-region-language-page into gsoc23/new-system-panel
Adding the Region & Language page to the system panel.
Please see:
System Panel mockup https://gitlab.gnome.org/Teams/Design/settings-mockups/-/blob/master/system/system-panel.png and
see #2241 (closed)