Upgrade to new ALA APIs

[mjwestgate]

The ALA is currently rolling out a new location to query its' APIs, documented at https://docs.ala.org.au/. Required steps are:

• change over current list of APIs to new ones, make sure all existing APIs are supported in new schema
• implement a default API key + option to overwrite with a bespoke key if the user requests one from ALA (presumably via galah_config)
• consider whether current architecture is best practice (currently using crul, could consider httr2, but must also supportvcr dependency or equivalent)
• retain existing infrastructure for other living atlases

[mjwestgate]

Note that new authentication requires oauth, which is not supported by crul. Another reason to move to httr2?

Example script for how this could work: https://github.com/AtlasOfLivingAustralia/jwt-usage-examples/blob/main/R/example.R