create config.env in config directory for requried ENV variables

NODE_ENV=development PORT=

MONGO_URI=

SALT_ROUNDS=10

JWT_SECRET=KtR@.ms+Fnd%2`<~(/Q& JWT_EXPIRE=30d JWT_COOKIE_EXPIRE=30

SMTP_HOST=" " SMTP_PORT=" " SMTP_EMAIL=" " SMTP_PASSWORD=" " SMTP_NAME=" "