Added the OpenRouter provider (#595)

app/MindWork AI Studio/Provider/OpenRouter/OpenRouterModelsResponse.cs

@@ -0,0 +1,7 @@
+namespace AIStudio.Provider.OpenRouter;
+
+/// <summary>
+/// A data model for the response from the OpenRouter models endpoint.
+/// </summary>
+/// <param name="Data">The list of models.</param>
+public readonly record struct OpenRouterModelsResponse(IList<OpenRouterModel> Data);