(ql:quickload "cl-project")
(cl-project:make-project #P"./path-to-project/root/")

It will create a directory with structure:

.
 |- my-project.asd
 |-.gitignore
 |-README.org
 |-README.markdown
 |-src
 | |-main.lisp
 |-tests
 | |-main.lisp