feat: Add PACS.002.001.11 Builder and Comprehensive Test Suite

- Implemented `Pacs00200111Builder` for ISO 20022 message PACS.002.001.11
- Added builder registration in `MessageBuilderFactory` for `MessageType.Pacs00200111`
- Supported comprehensive payment status reporting scenarios including group headers, original group information, transaction status, and supplementary data
- Created `Pacs00200111BuilderTests.cs` with 29 unit tests covering all builder functionality
- Integrated factory tests in `MessageBuilderFactoryPacs00200111Tests.cs` with 3 test methods
- Ensured full validation and XML generation capabilities for PACS.002.001.11 message structure

Author: cleilson pereira

Iso20022Library.Application/Builders/MessageBuilderFactory.cs

@@ -47,7 +47,8 @@ public class MessageBuilderFactory
         { MessageType.Pain00700106, () => new Pain00700106Builder() },
         { MessageType.Pain00700107, () => new Pain00700107Builder() },
         { MessageType.Pain00700108, () => new Pain00700108Builder() },
-        { MessageType.Pain00700109, () => new Pain00700109Builder() }
+        { MessageType.Pain00700109, () => new Pain00700109Builder() },
+        { MessageType.Pacs00200111, () => new Pacs.Pacs00200111Builder() }
     };
 
     /// <summary>

Iso20022Library.Application/Builders/Pacs/Pacs00200111Builder.cs

@@ -24,5 +24,6 @@ public enum MessageType
     Pain00700107,
     Pain00700108,
     Pain00700109,
-    Pain00700110
+    Pain00700110,
+    Pacs00200111
 }