[DOCS] Document _mvt API (#75384) (#76191)

* [DOCS] Document `_mvt` API

Documents the `_mvt` API endpoint added with #73872.

Relates to #75242.

* Reword

* Rename API

* Fix doc.url in JSON spec

* Reword

* Reword

* Add content type to JSON spec

* Edits

* Fix typo

* Reword

* Update docs after meeting

* Fix typos

* Fix `size` default

* Updates for #75522

* Fixes

* Clean up JSON spec

* Fix extent tag

* [DOCS] Add `<field>` constraints

* Minor clarification

* Update for #75697

* Reword

* Update for #75621

* Reword default sort

* Update for #75367

* Remove unneeded whitespace

* Add experimental admon and if flags

* [DOCS] Remove ifdefs

Co-authored-by: Elastic Machine <elasticmachine@users.noreply.github.com>

Co-authored-by: James Rodewig <40268737+jrodewig@users.noreply.github.com>
Co-authored-by: Elastic Machine <elasticmachine@users.noreply.github.com>

docs/reference/eql/eql-search-api.asciidoc

@@ -207,22 +207,7 @@ You can specify items in the array as a string or object.
 .Properties of `fields` objects
 [%collapsible%open]
 ====
-`field`::
-(Required, string)
-Wildcard pattern. The request returns values for field names matching this
-pattern.
-
-`format`::
-(Optional, string)
-Format in which the values are returned.
-+
-<<date,`date`>> and <<date_nanos, `date_nanos`>> fields accept a
-<<mapping-date-format,date format>>. <<spatial_datatypes, Spatial fields>>
-accept either `geojson` for http://www.geojson.org[GeoJSON] (the default) or
-`wkt` for {wikipedia}/Well-known_text_representation_of_geometry[Well Known
-Text].
-+
-For other field data types, this parameter is not supported.
+include::{es-repo-dir}/search/search.asciidoc[tag=fields-api-props]
 ====
 
 `filter`::

docs/reference/search.asciidoc

@@ -39,6 +39,10 @@ exception of the <<search-explain,explain API>>.
 * <<multi-search-template>>
 * <<render-search-template-api>>
 
+[discrete]
+[[geo-search-apis]]
+=== Geospatial search
+* <<search-vector-tile-api>>
 
 include::search/search.asciidoc[]
 
@@ -75,3 +79,5 @@ include::search/profile.asciidoc[]
 include::search/field-caps.asciidoc[]
 
 include::search/rank-eval.asciidoc[]
+
+include::search/search-vector-tile-api.asciidoc[]