Add TemplateProperty<std::vector<std::string>> as StringListProperty

Add default gui sorting to all scenes

scripts/scene_helper.lua

@@ -5,3 +5,12 @@ mark_interesting_nodes = function(nodes)
         end
     end
 end
+
+set_default_gui_sorting = function()
+    openspace.setPropertyValueSingle(
+        'Global Properties.ImGUI.Main.Properties.Ordering',
+        {
+            "Solar System", "Milky Way", "Universe", "Other"
+        }
+    )
+end