Build opensearch indexes on run

[DonHaul]

Spawned by:
#529

We need to find a tidy way for running the python manage.py opensearch index create command in all our environments:

• locally
• github workflows
• qa

The fix below makes the behaviour locally and in gh workflows be the same:
inspirehep/backoffice#77
inspirehep/backoffice#81

Is there a way to also make run this index create in an automatic fashion in qa? the current workaround is to run it manually if we ever need ito redeploy it from scratch

[DonHaul]

At the moment this is already being done in:

• github workflows
• local docker
  On qa we have discussed we this sort of command we will be running manually. so that we know exactly what was and wasn't run.