feat(core): ForbiddenException hinzugefügt zur Behandlung von verbotenen Operationen

DigitalData.Core.Exceptions/ForbiddenException.cs

@@ -0,0 +1,24 @@
+namespace DigitalData.Core.Exceptions;
+
+/// <summary>
+/// Represents an exception thrown when an operation is forbidden.
+/// Typically used to indicate lack of permission or access rights.
+/// </summary>
+public class ForbiddenException : Exception
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="ForbiddenException"/> class.
+    /// </summary>
+    public ForbiddenException()
+    {
+    }
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="ForbiddenException"/> class with a specified error message.
+    /// </summary>
+    /// <param name="message">The message that describes the error.</param>
+    public ForbiddenException(string? message)
+        : base(message)
+    {
+    }
+}