[Search service] Refactor the way server-side search strategies are registered (#68452) (#69331)

* [search] Refactor the way search strategies are registered/retrieved on the server

* Fix types and tests and update docs

* Fix failing test

* Fix build of example plugin

* Fix functional test

* Make server strategies sync

Co-authored-by: Liza K <liza.katz@elastic.co>

Co-authored-by: Lukas Olson <olson.lukas@gmail.com>
Co-authored-by: Elastic Machine <elasticmachine@users.noreply.github.com>

Author: 3 people

docs/development/plugins/data/server/kibana-plugin-plugins-data-server.irequesttypesmap.md

@@ -4,6 +4,8 @@
 
 ## IRequestTypesMap interface
 
+The map of search strategy IDs to the corresponding request type definitions.
+
 <b>Signature:</b>
 
 ```typescript

docs/development/plugins/data/server/kibana-plugin-plugins-data-server.iresponsetypesmap.md

@@ -4,6 +4,8 @@
 
 ## IResponseTypesMap interface
 
+The map of search strategy IDs to the corresponding response type definitions.
+
 <b>Signature:</b>
 
 ```typescript

docs/development/plugins/data/server/kibana-plugin-plugins-data-server.isearch.md

@@ -7,5 +7,5 @@
 <b>Signature:</b>
 
 ```typescript
-export declare type ISearch<T extends TStrategyTypes> = (request: IRequestTypesMap[T], options?: ISearchOptions) => Promise<IResponseTypesMap[T]>;
+export declare type ISearch<T extends TStrategyTypes> = (context: RequestHandlerContext, request: IRequestTypesMap[T], options?: ISearchOptions) => Promise<IResponseTypesMap[T]>;
 ```

docs/development/plugins/data/server/kibana-plugin-plugins-data-server.isearchcancel.md

@@ -7,5 +7,5 @@
 <b>Signature:</b>
 
 ```typescript
-export declare type ISearchCancel<T extends TStrategyTypes> = (id: string) => Promise<void>;
+export declare type ISearchCancel<T extends TStrategyTypes> = (context: RequestHandlerContext, id: string) => Promise<void>;
 ```

docs/development/plugins/data/server/kibana-plugin-plugins-data-server.isearchcontext.config_.md

@@ -14,5 +14,5 @@ export interface ISearchOptions
 
 |  Property | Type | Description |
 |  --- | --- | --- |
-|  [signal](./kibana-plugin-plugins-data-server.isearchoptions.signal.md) | <code>AbortSignal</code> |  |
+|  [signal](./kibana-plugin-plugins-data-server.isearchoptions.signal.md) | <code>AbortSignal</code> | An <code>AbortSignal</code> that allows the caller of <code>search</code> to abort a search request. |
 

docs/development/plugins/data/server/kibana-plugin-plugins-data-server.isearchcontext.core.md

@@ -4,6 +4,8 @@
 
 ## ISearchOptions.signal property
 
+An `AbortSignal` that allows the caller of `search` to abort a search request.
+
 <b>Signature:</b>
 
 ```typescript

docs/development/plugins/data/server/kibana-plugin-plugins-data-server.isearchcontext.md

@@ -0,0 +1,18 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-data-server](./kibana-plugin-plugins-data-server.md) &gt; [ISearchSetup](./kibana-plugin-plugins-data-server.isearchsetup.md)
+
+## ISearchSetup interface
+
+<b>Signature:</b>
+
+```typescript
+export interface ISearchSetup 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [registerSearchStrategy](./kibana-plugin-plugins-data-server.isearchsetup.registersearchstrategy.md) | <code>TRegisterSearchStrategy</code> | Extension point exposed for other plugins to register their own search strategies. |
+