[kotlin] Test array integer (enum) with kotlin client generator (#22336)

* add tests for array of enum

* update

samples/client/petstore/kotlin-array-integer-enum/docs/DefaultApi.md

@@ -0,0 +1,50 @@
+# DefaultApi
+
+All URIs are relative to *http://localhost*
+
+| Method | HTTP request | Description |
+| ------------- | ------------- | ------------- |
+| [**operation**](DefaultApi.md#operation) | **GET** / |  |
+
+
+<a id="operation"></a>
+# **operation**
+> ModelWithIntArrayEnum operation()
+
+
+
+### Example
+```kotlin
+// Import classes:
+//import org.openapitools.client.infrastructure.*
+//import org.openapitools.client.models.*
+
+val apiInstance = DefaultApi()
+try {
+    val result : ModelWithIntArrayEnum = apiInstance.operation()
+    println(result)
+} catch (e: ClientException) {
+    println("4xx response calling DefaultApi#operation")
+    e.printStackTrace()
+} catch (e: ServerException) {
+    println("5xx response calling DefaultApi#operation")
+    e.printStackTrace()
+}
+```
+
+### Parameters
+This endpoint does not need any parameter.
+
+### Return type
+
+[**ModelWithIntArrayEnum**](ModelWithIntArrayEnum.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: application/json
+

samples/client/petstore/kotlin-array-integer-enum/docs/ModelWithIntArrayEnum.md

@@ -0,0 +1,17 @@
+
+# ModelWithIntArrayEnum
+
+## Properties
+| Name | Type | Description | Notes |
+| ------------ | ------------- | ------------- | ------------- |
+| **daysOfWeek** | [**inline**](#kotlin.collections.List<DaysOfWeek>) |  |  |
+
+
+<a id="kotlin.collections.List<DaysOfWeek>"></a>
+## Enum: daysOfWeek
+| Name | Value |
+| ---- | ----- |
+| daysOfWeek | 0, 1, 2, 3, 4, 5, 6 |
+
+
+