Add InvokeRecActionAsync method to ReCClient class

Added the `InvokeRecActionAsync` method to the `ReCClient` class in the `ReC.Client` namespace. This method performs an asynchronous HTTP POST request to the `api/RecAction/invoke/{profileId}` endpoint. It accepts a `profileId` parameter to specify the profile ID and an optional `CancellationToken` for task cancellation. The method ensures the HTTP response indicates success by calling `EnsureSuccessStatusCode()`. Included XML documentation comments for clarity and maintainability.

src/ReC.Client/ReCClient.cs

@@ -18,5 +18,17 @@ namespace ReC.Client
         {
             _http = http ?? throw new ArgumentNullException(nameof(http));
         }
+
+        /// <summary>
+        /// POST api/RecAction/invoke/{profileId}
+        /// </summary>
+        /// <param name="profileId"></param>
+        /// <param name="ct"></param>
+        /// <returns></returns>
+        public async Task InvokeRecActionAsync(int profileId, CancellationToken ct = default)
+        {
+            var resp = await _http.PostAsync($"api/RecAction/invoke/{profileId}", content: null, ct);
+            resp.EnsureSuccessStatusCode();
+        }
     }
 }