native menu_addblank2( menu );
Menu resource identifier.
Adds a blank line to a menu, always shifting the numbering down. This will add a special item to create a blank line. It will affect the menu item count and pagination. These items can be modified later but will ignore access and item callback results. Only available in 1.8.3 and above.
1 on success, 0 on failure.
Invalid menu resource. Too many items on non-paginated menu (max is 10)