Merge pull request #9 from vyfor/dev

fix: Parse the `tool_calls` & `function_call` fields when using a tool/function

src/commonMain/kotlin/io/github/vyfor/groqkt/api/chat/ChatCompletion.kt

@@ -67,11 +67,15 @@ data class ChatCompletionChoice(
  *
  * @property role The role of the message sender, e.g., `assistant`.
  * @property content The content of the message.
+ * @property toolCalls The tool calls generated by the model.
+ * @property functionCall The function call generated by the model.
  */
 @Serializable
 data class ChatCompletionMessage(
     val role: String,
     val content: String,
+    val toolCalls: List<CompletionToolCall>?,
+    val functionCall: CompletionFunctionCall?,
 )
 
 /**
@@ -93,11 +97,15 @@ data class StreamingChatCompletionChoice(
  *
  * @property role Optional role of the message sender, which may not be present in every delta.
  * @property content The content of the message, streamed incrementally.
+ * @property toolCalls The tool calls generated by the model.
+ * @property functionCall The function call generated by the model.
  */
 @Serializable
 data class ChatCompletionDelta(
     val role: String?,
     val content: String?,
+    val toolCalls: List<CompletionToolCall>?,
+    val functionCall: CompletionFunctionCall?,
 )
 
 /**