The HLRC will no longer be published from 8.0.0 and onwards.
Also the HLRC docs are no longer published, so these can be removed now.
The HLRC is currently used in a number of java rest tests and
for this reason it can't be removed completely.
Closes#81299
This commit converts the low level client and high level client chapters into two parts, which allows each high level client supported api to be on a separate page and show up in the index on the right.
The REST Client is split into 2 parts:
* Low level
* High level
The High level client has a main common section and the document delete API documentation as a start.
[DOCS] add java REST client docs
Add some docs on how to get started with the Java REST client, some common configuration that may be needed and the sniffer component.
