This is standalone because it is important and is usually utilized in real-life work. The file module in ansible deals with file/directory-related operations.
Reference (documentation):
https://docs.ansible.com/ansible/latest/collections/ansible/builtin/file_module.html
http://www.devopsworld.co.in/p/ansible-file-module.html
https://irfandevops.blogspot.com/2022/02/hidden-file-module-ansible.html