Add ManifestDoesNotExistException and Solution (#4455)

Co-authored-by: Matthew Penner <matthew@pterodactyl.io>

app/Exceptions/ManifestDoesNotExistException.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace Pterodactyl\Exceptions;
+
+use Exception;
+use Spatie\Ignition\Contracts\Solution;
+use Spatie\Ignition\Contracts\ProvidesSolution;
+
+class ManifestDoesNotExistException extends Exception implements ProvidesSolution
+{
+    public function getSolution(): Solution
+    {
+        return new Solutions\ManifestDoesNotExistSolution();
+    }
+}