Setup Mockoon for testing

@MrDaleSmith - It looks good except that it needs to run in the background so the job doesn't get stuck on the process. I should have mentioned that in the description. It should just be a matter of adding and " &" in the end hopefully.

See the last sentence here:
https://mockoon.com/tutorials/run-mock-api-anywhere-cli/

Chat tests are also setup now: https://git.drupalcode.org/project/ai/-/merge_requests/41

marcus_johansson → closed merge request !38

Automatically closed - issue fixed for 2 weeks with no activity.