Setup the project structure for working within the RAP.
Examples
if (FALSE) { # \dontrun{
# Run proj_setup_git_config() first before running the admin_create_project() function.
# ukbAid::proj_setup_git_config("Luke W. Johnston", "lwjohnst@gmail.com")
admin_create_project(fs::path_temp("testproj"))
} # }