[kotlin][client] add tests for comma separated list in array path params (#11293)

* add tests for kotlin-array-simple-string

* add new files

* remove build fies

* clean up

samples/client/petstore/kotlin-array-simple-string/docs/DefaultApi.md

@@ -0,0 +1,53 @@
+# DefaultApi
+
+All URIs are relative to *http://localhost*
+
+Method | HTTP request | Description
+------------- | ------------- | -------------
+[**idsGet**](DefaultApi.md#idsGet) | **GET** /{ids} | 
+
+
+<a name="idsGet"></a>
+# **idsGet**
+> idsGet(ids)
+
+
+
+### Example
+```kotlin
+// Import classes:
+//import org.openapitools.client.infrastructure.*
+//import org.openapitools.client.models.*
+
+val apiInstance = DefaultApi()
+val ids : kotlin.collections.List<kotlin.String> =  // kotlin.collections.List<kotlin.String> | 
+try {
+    apiInstance.idsGet(ids)
+} catch (e: ClientException) {
+    println("4xx response calling DefaultApi#idsGet")
+    e.printStackTrace()
+} catch (e: ServerException) {
+    println("5xx response calling DefaultApi#idsGet")
+    e.printStackTrace()
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **ids** | [**kotlin.collections.List&lt;kotlin.String&gt;**](kotlin.String.md)|  |
+
+### Return type
+
+null (empty response body)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: Not defined
+