Reinitialise API project with Django boilerplate

Description

Switch project from FastAPI boilerplate to the django webapp boilerplate to a basic "hello world" state.

Acceptance criteria

• All required project files exist
• Gitlab pipeline runs
  • Tests
  • Pre-commit
  • Standard security scanning
  • Pushes built container to registry

Links/references

https://gitlab.developers.cam.ac.uk/uis/devops/webapp-boilerplate