[DOCS] Create URLs for docs migrating from Enterprise Search (elastic…

…#100032)

Several docs are going to migrate from Enterprise Search to
Elasticsearch.

Create the new URLs without yet placing the pages into the Elasticsearch
navigation. This will allow us to handle redirects for Kibana, docs, and
the web without waiting for additional content design decisions.

The new URLs will be:

- https://www.elastic.co/guide/en/elasticsearch/reference/master/ingest-pipeline-search.html
- https://www.elastic.co/guide/en/elasticsearch/reference/master/ingest-pipeline-search-inference.html
- https://www.elastic.co/guide/en/elasticsearch/reference/master/ingest-pipeline-search-inference.html#ingest-pipeline-search-inference-update-mapping
- https://www.elastic.co/guide/en/elasticsearch/reference/master/nlp-example.html
- https://www.elastic.co/guide/en/elasticsearch/reference/master/behavioral-analytics-overview.html
- https://www.elastic.co/guide/en/elasticsearch/reference/master/behavioral-analytics-start.html
- https://www.elastic.co/guide/en/elasticsearch/reference/master/behavioral-analytics-api.html
- https://www.elastic.co/guide/en/elasticsearch/reference/master/behavioral-analytics-event.html
- https://www.elastic.co/guide/en/elasticsearch/reference/master/behavioral-analytics-event-reference.html
- https://www.elastic.co/guide/en/elasticsearch/reference/master/behavioral-analytics-cors.html
- https://www.elastic.co/guide/en/elasticsearch/reference/master/search-application-overview.html
- https://www.elastic.co/guide/en/elasticsearch/reference/master/search-application-api.html
- https://www.elastic.co/guide/en/elasticsearch/reference/master/search-application-client.html
- https://www.elastic.co/guide/en/elasticsearch/reference/master/search-application-security.html

docs/reference/redirects.asciidoc

@@ -1932,3 +1932,73 @@ Refer to <<remote-clusters>>.
 === Configure roles and users for remote clusters
 
 Refer to <<remote-clusters>>.
+
+[role="exclude",id="ingest-pipeline-search"]
+=== Ingest pipelines for Search indices
+
+coming::[8.11.0]
+
+[role="exclude",id="ingest-pipeline-search-inference"]
+=== Inference processing for Search indices
+
+coming::[8.11.0]
+
+[id="ingest-pipeline-search-inference-update-mapping"]
+==== Update mapping
+
+coming::[8.11.0]
+
+[role="exclude",id="nlp-example"]
+=== Tutorial: Natural language processing (NLP)
+
+coming::[8.11.0]
+
+[role="exclude",id="behavioral-analytics-overview"]
+=== Elastic Behavioral Analytics
+
+coming::[8.11.0]
+
+[role="exclude",id="behavioral-analytics-start"]
+=== Get started with Behavioral Analytics
+
+coming::[8.11.0]
+
+[role="exclude",id="behavioral-analytics-api"]
+=== Behavioral Analytics APIs
+
+coming::[8.11.0]
+
+[role="exclude",id="behavioral-analytics-event"]
+=== View Behavioral Analytics Events
+
+coming::[8.11.0]
+
+[role="exclude",id="behavioral-analytics-event-reference"]
+=== Behavioral Analytics events reference
+
+coming::[8.11.0]
+
+[role="exclude",id="behavioral-analytics-cors"]
+=== Set up CORS for Behavioral Analytics
+
+coming::[8.11.0]
+
+[role="exclude",id="search-application-overview"]
+=== Elastic Search Applications
+
+coming::[8.11.0]
+
+[role="exclude",id="search-application-api"]
+=== Search Applications search API and templates
+
+coming::[8.11.0]
+
+[role="exclude",id="search-application-client"]
+=== Search Applications client
+
+coming::[8.11.0]
+
+[role="exclude",id="search-application-security"]
+=== Search Applications security
+
+coming::[8.11.0]