Fixtures & load audiences command

Merge pull request #29 from Setono/25-load-command

Added: Audiences load command

v0.1.3

Made: Third party client service lazy (#28)

v0.1.2

Hotfixed: Non-existent service exceptions (just removed for now)

v0.1.1

Added comment and better exception

Working, but not feature complete and still missing tests

Merge pull request #21 from Setono/major-refactoring

Refactored to Symfony messenger and simplified a lot