Prototype HAPI Java server plug-in for ESDC. This will interface with
https://github.com/hapi-server/server-java
See also https://github.com/hapi-server/server-java/issues/32
This code will probably find a new home at some point.
See also [https://github.com/jbfaden/esdc-hapi/blob/main/src/org/esdc/hapi/readme.md]