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.
Luca Cavanna
David Pilato