Implemented rate limit handling for providers

app/MindWork AI Studio/Tools/HttpRateLimitedStreamResult.cs

@@ -0,0 +1,23 @@
+namespace AIStudio.Tools;
+
+/// <summary>
+/// The result of a rate-limited HTTP stream.
+/// </summary>
+/// <param name="IsFailedAfterAllRetries">True, when the stream failed after all retries.</param>
+/// <param name="ErrorMessage">The error message which we might show to the user.</param>
+/// <param name="Response">The response from the server.</param>
+public readonly record struct HttpRateLimitedStreamResult(
+    bool IsSuccessful,
+    bool IsFailedAfterAllRetries,
+    string ErrorMessage,
+    HttpResponseMessage? Response) : IDisposable
+{
+    #region IDisposable
+
+    public void Dispose()
+    {
+        this.Response?.Dispose();
+    }
+
+    #endregion
+}