Add StatusExtensions with HTTP status mapping methods

Added StatusExtensions.cs with extension methods for Status and HttpStatusCode:
- ToHttpStatusCode maps Status to nullable HttpStatusCode if possible.
- IsSuccess checks if a Status or HttpStatusCode represents a successful response.
- Handles both direct Status values and those convertible to HTTP codes.

src/ReC.Domain/Constants/StatusExtensions.cs

@@ -0,0 +1,32 @@
+using System.Net;
+
+namespace ReC.Domain.Constants;
+
+public static class StatusExtensions
+{
+    public static HttpStatusCode? ToHttpStatusCode(this Status status)
+    {
+        int code = (int)status;
+
+        if (Enum.IsDefined(typeof(HttpStatusCode), code))
+        {
+            return (HttpStatusCode)code;
+        }
+
+        return null;
+    }
+
+    public static bool IsSuccess(this HttpStatusCode code)
+    {
+        int value = (int)code;
+        return value >= 200 && value <= 299;
+    }
+
+    public static bool IsSuccess(this Status status)
+        => status switch
+        {
+            Status.QuerySuccess => true,
+            Status.QueryFailed => false,
+            _ => status.ToHttpStatusCode() is HttpStatusCode httpStatus && httpStatus.IsSuccess()
+        };
+}