Shortcode

Is it possible to use shortcode to place the flags in my menu because when i am using the language switcher in the menu section of the website the flags go inside the hamburger menu when screen is small. Now i want the flags to stay outside of that hamburger menu and a good way to do this, is by using shortcode instead of the menu item. I can’t find the use of shortcodes anywhere in the documentation so is this a thing or maybe something for you to add?

Sjoerd