properties: add wp_properties_sort()

Depends on pipewire!555 to avoid breaking stuff

lib/wp/properties.c

@@ -848,6 +848,16 @@ wp_properties_iterator_item_get_value (const GValue * item)
   return dict_item->value;
 }
 
+void
+wp_properties_sort (WpProperties * self)
+{
+  g_return_if_fail (self != NULL);
+  g_return_if_fail (!(self->flags & FLAG_IS_DICT));
+  g_return_if_fail (!(self->flags & FLAG_NO_OWNERSHIP));
+
+  return spa_dict_qsort (&self->props->dict);
+}
+
 /**
  * wp_properties_peek_dict:
  * @self: a properties object

lib/wp/properties.h

@@ -144,6 +144,11 @@ const gchar * wp_properties_iterator_item_get_key (const GValue * item);
 WP_API
 const gchar * wp_properties_iterator_item_get_value (const GValue * item);
 
+/* sort */
+
+WP_API
+void wp_properties_sort (WpProperties * self);
+
 /* convert */
 
 WP_API