Hello and thank you for the question.
There is currently no shortcode for the language switcher. However, you can integrate it in various ways:
a) For classic themes under Appearance > Menu. There we provide our own function that can be inserted into the menu via drag & drop, as is usual with WordPress.
b) With modern FSE themes there are 2 blocks. One block can be integrated into the menu in the navigation block, the other can be placed anywhere in the template.
Are these two ways not sufficient? I am happy to take into account the request to make the switcher available via shortcode for the further development of the plugin.
Thank you for your answer, i will use the menu item. A shortcode would be grat for the future 🙂