Moved schemas/org.gnome.shell.extensions.TaskBar.gschema.xml to /usr/lib/glib-2.0/schemas

Moved schemas/org.gnome.shell.extensions.TaskBar.gschema.xml to correct location (from usr/share/gnome-shell/extensions/TaskBar@zpydr to /usr/lib/glib-2.0/schemas) to allow changing TaskBar extension settings system-wide (for all users)