More intelligent availability

[Otterfan]

Current availability information is based on the value in the PNX record, which is static and dumb. We can improve this.

[danmichaelo]

Curious what plans you have for this. If live availability is only available from external services, it might be better handled through a separate package, but if there is a way to get info from X-service, it's a different take of course. I'm quite new to the Primo APIs. Just please make sure it's not a Alma-only solution :)