NXCALS-6856 Add annotations about JPype in cern extraction api docs page and add examples in py4j

Rafal Mucharequested to merge
fix-NXCALS-6856-add-annotation-jpype-for-snippets-in-cern-extraction-api into develop

Deployed changes: http://nxcals-docs-rmucha.web.cern.ch/current/user-guide/cern-extraction-api/

@acc-logging-team - please have a look for approval.

Please describe the merge request here.

Closes NXCALS-6856

Edited by Rafal Mucha

Merge request reports