Document Monitoring Logs UI

[lcawl]

Related to elastic/kibana#31275 and elastic/kibana#36659

The following documentation needs to be updated to reflect this new functionality:

• Elasticsearch Reference (i.e. how to configure Filebeat to collect and send the log data, similar to https://www.elastic.co/guide/en/elasticsearch/reference/master/configuring-metricbeat.html See [DOCS] Describe setup for monitoring logs elasticsearch#42655

• Stack Overview's description of configuring a production environment (i.e. to collect and send Filebeat data to the monitoring cluster): https://www.elastic.co/guide/en/elastic-stack-overview/master/monitoring-production.html

• Stack Overview's monitoring architecture diagrams to include Filebeat: https://www.elastic.co/guide/en/elastic-stack-overview/master/how-monitoring-works.html

• Kibana Guide's overview and screenshots for the Elasticsearch monitoring metrics (i.e. to include the "Recent logs" table: https://www.elastic.co/guide/en/kibana/master/elasticsearch-metrics.html) See [DOCS] Add details about monitoring logs kibana#39139

. [ ] Add blurb in 7.2 Kibana Release Highlights: elastic/kibana#39197

[cachedout]

cc: @elastic/stack-monitoring so those who wish can follow this issue.