Main functions to Push to and Pull from google drive
pull_from_drive()
Renames, moves output files from Google Drive to local machine
push_to_drive()
Pushes Atlantis output files to Google Drive
gd_exists()
Check if folder exists
get_file_list()
Get list of files with a directory on Google drive
list_core_files()
List of Core files used in Atlantis
list_atlantisom_files()
List of Atlantis output files needed for atlantisom R package