Imports of godotenv command

PathSynopsis
flagPackage flag implements command-line flag parsing.
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
github.com/joho/godotenvPackage godotenv is a go port of the ruby dotenv library (https://github.com/bkeepers/dotenv)
logPackage log implements a simple logging package.
stringsPackage strings implements simple functions to manipulate UTF-8 encoded strings.