change: add InvalidExitCodeException

Author: emako

src/Flucli/Exceptions/InvalidExitCodeException.cs

@@ -0,0 +1,24 @@
+using System;
+
+namespace Flucli.Exceptions;
+
+/// <summary>
+/// Represents an exception that is thrown when an invalid exit code is returned by a process.
+/// </summary>
+public class InvalidExitCodeException : Exception
+{
+    /// <summary>
+    /// Initializes a new instance of <see cref="InvalidExitCodeException" />.
+    /// </summary>
+    /// <param name="validExitCodes">The valid exit codes for the process.</param>
+    /// <param name="message">The message of the exception.</param>
+    public InvalidExitCodeException(int[]? validExitCodes = null, string message = "Invalid ExitCode") : base(message)
+    {
+        ValidExitCodes = validExitCodes ?? [0];
+    }
+
+    /// <summary>
+    /// Gets the array containing all valid exit codes.
+    /// </summary>
+    public int[] ValidExitCodes { get; }
+}