As armadillo developer I want to be able to use basic auth when using resources so I can add tests for it to the release test scripts

[marikaris]

Context:
Because it's not possible to retrieve resources without an oidc token at the moment.
When we implemented the resources part, we thought it wasn't necessary to be able to access it via basic auth, so we didn't implement it, although it is possible:
​https://github.com/obiba/resourcer/blob/f6becda6ed2e7e0bc5e7595e885b2b0f39f42e43/R/HttpFileResourceGetter.R#L51
In order to run tests which retrieve resources in the CI, we need to be able to retrieve resources via basic auth, so we can run those tests.
Demo:
Can use resources when logged in via basic auth
Acceptance criteria: