CIRCSTOR-620: Add hold trigger to notice enum

[mhamann-ubl]

This PR adds a new notice type as requested per: https://folio-org.atlassian.net/browse/UICIRC-1245

It is the basis for implementing the UI and Middleware components.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[MikeTaylor]

Hi, @mhamann-ubl. I'm not really the right person to review this. I've never worked on this codebase — or, in more than trivial ways, on any Java-based FOLIO module. That said, I'm competent to review the addition of an element to an enumeration in a JSON Schema, so I guess it's OK for me to approve this.

[mhamann-ubl]

Hi, @mhamann-ubl. I'm not really the right person to review this. I've never worked on this codebase — or, in more than trivial ways, on any Java-based FOLIO module. That said, I'm competent to review the addition of an element to an enumeration in a JSON Schema, so I guess it's OK for me to approve this.

Thank you @MikeTaylor. Yes, it felt silly to request a review on that change, but I didn't just want to merge it without someone from the team even seeing it. Anyway, I will the merge and close this.