Fix serialization of assistant's code interpreter tool's file IDs

Author: branislav-burdiliak

openai-client/src/main/scala/io/cequence/openaiscala/JsonFormats.scala

@@ -533,7 +533,7 @@ object JsonFormats {
 
  implicit lazy val assistantToolResourceWrites: Writes[AssistantToolResource] = {
  case c: CodeInterpreterResources =>
- Json.obj("code_interpreter" -> Json.obj("file_ids" -> c.fileIds))
+ Json.obj("code_interpreter" -> Json.obj("file_ids" -> c.fileIds.map(_.file_id)))
 
  case f: FileSearchResources =>
  assert(

openai-examples/src/main/scala/io/cequence/openaiscala/examples/CreateThread.scala

@@ -1,6 +1,7 @@
 package io.cequence.openaiscala.examples
 
-import io.cequence.openaiscala.domain.ThreadMessage
+import io.cequence.openaiscala.domain.{AssistantToolResource, FileId, ThreadMessage}
+
 import scala.concurrent.Future
 
 object CreateThread extends Example {
@@ -12,6 +13,7 @@ object CreateThread extends Example {
  ThreadMessage("Hello, what is AI?"), // file_ids = Seq("file-abc123")
  ThreadMessage("How does AI work? Explain it in simple terms.")
  ),
+ toolResources = Seq(AssistantToolResource.CodeInterpreterResources(Seq(FileId("file1.txt")))),
  metadata = Map("user_id" -> "986413")
  )
  } yield {