Modifies folio_api to use folioAccessToken in cookie headers.

[codyn-txst]

Please describe the problem you'd like to be solved:
In the upcoming Sunflower Release of FOLIO, non-expiring tokens will no longer be supported. (RTR docs). The authentication method authn/login will be removed from the login module.

Describe the solution you'd like to see implemented:
I believe there will be a lot of libraries needing to update their current folio-spineomatic middleware solution to be able to support token retrieval from the current authentication method authn/login-with-expiry

Describe alternatives you've considered:
Since a request for the XML of an item only happens when a barcode is scanned, updating the codebase to authenticate at authn/login-with-expiry for each request should suffice. This is suggested in the documentation for refresh token rotation underneath the section titled:
"A guide for non-module clients such as scripts or other integrations".

Token retrieval from set-cookie response headers will also need to be implemented since tokens no longer will be sent in the response body.

Additional context:
FOLIO Release Cycle

[codyn-txst]

Addresses issue #4