CentOps: Implement API Keys functionality

[decodingahmed]

As a CentOps Architect I want the /admin endpoints of the CentOps API to require use of admin API keys So that only admins can call the /admin endpoints

Acceptance Criteria

• Should handle all /admin endpoints in the following way:
  • [ ] Should return 400 BadRequest if X-Api-Key header is missing
  • [ ] Should return 401 Unauthorized if X-Api-Key header contains non-admin key
• Should handle the public GET /participants and /institutions endpoints in the following way:
  • [ ] Should return 401 Unauthorized if X-Api-Key is revoked
• Should handle PUT /participants and /institutions in the following way:
  • [ ] Should return 401 Unauthorized if X-Api-Key is revoked
  • [ ] Should fetch the entity id associated with the API Key and store it in the request context for use by the data access layer.

[decodingahmed]

I will close this issue without a merge into main. Work for this issue will be in PR #58 and merge conflicts and PR comments will be address in the new issue.