* Update to Elasticsearch 8. Use of Elasticsearch Java API Client instead of Java High Level REST Client

* Update to Elasticsearch 8 / WFS indexing draft. (#88)

* Update to Elasticsearch 8 / remove TODOs

* Update Elasticsearch client to version 8.11.3

* Elasticsearch / Update maven plugin.

* Associated record / Store all relations in index / Remove experimental feature, not used. Related to geonetwork#4912

* Elasticsearch / Update maven plugin configuration. Avoid error like ERROR: Elasticsearch exited unexpectedly, with exit code 143

* Elasticsearch / Update MetadataUtils.getAssociated to retrieve scripted overview field

* Elasticsearch / Update MetadataUtils.getAssociated remove TODO comment

* Elasticsearch / Fix and refactor index readonly health check

* Elasticsearch / Log query error details

* Elasticsearch / Sonarlint improvements

* Elasticsearch / WrapperQuery use base64 encoded JSON string query.

* Elasticsearch / Remove unused commented code from EsSearchManager

* Elasticsearch / More strict Xlink query based on UUID and fix check on hits. A request may return no hits but can be used to check number of hits. In such case we should avoid using hits.hits.size and use hits.total.value to get number of match.

* Elasticsearch / Health check / Fix number of hits info.

* Elasticsearch / Cleaning / No need to retrieve hits to only get matches.

* Elasticsearch / Deprecated field [include] used, expected [includes] instead.

* Elasticsearch / Remove 'Clear XLink cache' from Administration > Tools, clear the Xlink cache automatically before indexing and remove non-implemented code to retrieve metadata with XLink (not required anymore)

* Kibana / Update install instruction

Related to elastic/kibana#82521.

* Elasticsearch / Remove unused imports

* Kibana / Update default dashboards.

* Elasticsearch / Documentation / Update Elasticsearch version

* Elasticsearch / Fix logger module name typo

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Co-authored-by: François Prunayre <[email protected]>