add organization and storage endpoints (read only)

[peetucket]

Why was this change made? 🤔

Fixes #43 - add fetch organization, org interface and interface detail endpoints to folio_client.

Notes:

• This does not use paging to move through a large results set ... you can give it a very large limit though if performance is not a concern (or possibly implement paging at the consumer level). Using this on okapi-test, there are a few hundred organizations, and the complete set comes back in about ~20-30 seconds
• This PR only implements the "get" endpoints, the documentation shows their are update endpoints (e.g. PUT, POST, etc.).
• This PR does not parse the results coming back ... it returns a JSON response that comes from the API which can be used by the consumer.

Perhaps future work can parse and produce different results if needed.

How was this change tested? 🤨

Added new tests

[aaron-collier]

@peetucket I think this might be a credential issue if you are using the sdr_app user or whatever. I had to have some specific rights turned on for me and https://okapi-test.stanford.edu/organizations/organizations returns a big set. May check with libsys about either your account or the API one.

[peetucket]

Ok, I'll check with libsys.

[peetucket]

Verified it works on okapi-test after using app_libsys account.