Atualização de versão e melhorias na estrutura SaveResult

* Atualização de versão
  - Atualizou a propriedade `ProbVer` para a nova versão `1.0.0-preview-4.4`.

* Melhoria na estrutura SaveResult
  - Adicionou `using System.Diagnostics;` para funcionalidades adicionais.
  - Modificou o construtor para incluir uma propriedade `Exception`.
  - Introduziu uma nova propriedade `Exception` para armazenar exceções.
  - Adicionou o método `EnsureSuccess` para validação de resultados.

Author: eglauko

RoyalCode.EnterprisePatterns/Directory.Build.props

@@ -25,7 +25,7 @@
 	</PropertyGroup>
 	<PropertyGroup>
 		<ValVer>1.0.0-preview-2.0</ValVer>
-		<ProbVer>1.0.0-preview-4.3</ProbVer>
+		<ProbVer>1.0.0-preview-4.4</ProbVer>
 		<HintVer>1.0.0</HintVer>
 		<SearchVer>0.8.1</SearchVer>
 	</PropertyGroup>

RoyalCode.EnterprisePatterns/RoyalCode.UnitOfWork.Abstractions/SaveResult.cs

@@ -1,4 +1,5 @@
 using RoyalCode.SmartProblems;
+using System.Diagnostics;
 using System.Diagnostics.CodeAnalysis;
 using System.Runtime.CompilerServices;
 
@@ -53,6 +54,7 @@ public SaveResult(int changes)
     public SaveResult(Exception ex)
     {
         Problems = Problems.InternalError(ex);
+        Exception = ex;
     }
 
     /// <summary>
@@ -65,6 +67,11 @@ public SaveResult(Exception ex)
     /// </summary>
     public Problems? Problems { [MethodImpl(MethodImplOptions.AggressiveInlining)] get; }
 
+    /// <summary>
+    /// The exception that occurred during the save operation, if any.
+    /// </summary>
+    public Exception? Exception { [MethodImpl(MethodImplOptions.AggressiveInlining)] get; }
+
     /// <summary>
     /// Returns true if the save operation succeeded.
     /// </summary>
@@ -112,6 +119,23 @@ public bool IsSuccessOrGetProblems([NotNullWhen(false)] out Problems? problems)
         return IsSuccess;
     }
 
+    /// <summary>
+    /// Validates the result and throws an exception if it's a failure.
+    /// </summary>
+    /// <exception cref="InvalidOperationException">
+    ///     Thrown when the save operation failed, either due to an exception or problems.
+    /// </exception>
+    [StackTraceHidden]
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public void EnsureSuccess()
+    {
+        if (Exception is not null)
+            throw new InvalidOperationException($"Save operation failed with exception: {Exception.Message}", Exception);
+        
+        if (IsFailure)
+            throw Problems.ToException("Save operation failed with problem(s):\n - {0}", "\n - ");
+    }
+
     /// <summary>
     /// Convert the save result to an operation result.
     /// </summary>