[Search] Add indexer client timeout sample code (Azure#24506)

* add timeout sample code

* Split SearchClientOptions into new subsection

* fix failed build

* Add SearchClientOptions snippet to sample

* check SNIPPET

Author: vl8163264128

sdk/search/Azure.Search.Documents/samples/Sample02_Service.md

@@ -131,6 +131,28 @@ SearchIndexerDataSourceConnection dataSourceConnection = new SearchIndexerDataSo
 await indexerClient.CreateDataSourceConnectionAsync(dataSourceConnection);
 ```
 
+#### Create SearchClientOptions
+
+To control specific request behaviors such as timeouts and retries, you can create a client with options.
+
+```C# Snippet:Azure_Search_Tests_Samples_CreateIndexerAsync_SearchClientOptions
+// Create SearchIndexerClient options
+SearchClientOptions options = new SearchClientOptions()
+{
+    Transport = new HttpClientTransport(new HttpClient()
+    {
+        // Increase timeout for each request to 5 minutes
+        Timeout = TimeSpan.FromMinutes(5)
+    });
+};
+
+// Increase retry attempts to 6
+options.Retry.MaxRetries = 6;
+
+// Create a new SearchIndexerClient with options
+indexerClient = new SearchIndexerClient(endpoint, credential, options);
+```
+
 ### Create a Skillset
 
 To provide French translations of descriptions, we'll define a [translation skill](https://docs.microsoft.com/azure/search/cognitive-search-skill-text-translation) to translate from English.

sdk/search/Azure.Search.Documents/tests/Samples/Sample01_HelloWorld.cs

@@ -276,6 +276,26 @@ public async Task CreateIndexerAsync()
                 // index is deleted when our SearchResources goes out of scope.
                 cleanUpTasks.Push(() => indexerClient.DeleteDataSourceConnectionAsync(dataSourceConnectionName));
 
+#if SNIPPET
+                #region Snippet:Azure_Search_Tests_Samples_CreateIndexerAsync_SearchClientOptions
+                // Create SearchIndexerClient options
+                SearchClientOptions options = new SearchClientOptions()
+                {
+                    Transport = new HttpClientTransport(new HttpClient()
+                    {
+                        // Increase timeout for each request to 5 minutes
+                        Timeout = TimeSpan.FromMinutes(5)
+                    });
+                };
+
+                // Increase retry attempts to 6
+                options.Retry.MaxRetries = 6;
+
+                // Create a new SearchIndexerClient with options
+                indexerClient = new SearchIndexerClient(endpoint, credential, options);
+                #endregion Snippet:Azure_Search_Tests_Samples_CreateIndexerAsync_SearchClientOptions
+#endif
+
                 #region Snippet:Azure_Search_Tests_Samples_CreateIndexerAsync_Skillset
                 // Translate English descriptions to French.
                 // See https://docs.microsoft.com/azure/search/cognitive-search-skill-text-translation for details of the Text Translation skill.