Implement Direct Download of Binary Content at the Binary Endpoint

[alexanderkiel]

Scaffolding:

• in blaze.rest-api.routes introduce a new :response-type called :binary
  • use that new response type in wrap-output to call a new middleware function called blaze.middleware.fhir.output/wrap-binary-output
  • in resource-route tag the route with :response-type :binary if the name is "Binary"
• create a new middleware function called blaze.middleware.fhir.output/wrap-binary-output
  • it should call request-format like wrap-output but only handle :fhir+json and :fhir+xml in the normal way and return the binary content otherwise
• the binary handling should take the :data base64 string of the Binary resource, base64 decode it and output it as body and also set the :contentType string as Content-Type header

For tests:

• unit tests in blaze.middleware.fhir.output-test
• integration test in GitHub Actions by creating a new Bash script in .github/scripts
  • generate-large-binary-resource.sh
  • create-patient.sh

Part of #2009.