Read the context window from four more model lists

app/MindWork AI Studio/Provider/Groq/GroqModelsResponse.cs

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