Dev dependency: add Fake (PHP library that generates fake data)

Documentation:

• https://github.com/fzaninotto/Faker

Examples:

• https://symfonycasts.com/screencast/symfony-doctrine/faker-fixtures
• https://blog.dev-web.io/2018/01/20/symfony-4-creation-de-fixtures-aleatoires-faker/
• https://www.wanadev.fr/123-grace-a-faker-generez-des-donnees-aleatoires-dans-votre-base-de-donnees/

Installation:

composer require --dev fzaninotto/faker