add exception permission and group

Author: jlopes90

src/Authorization/AuthorizationException.php

@@ -19,4 +19,9 @@ public static function forUnknownPermission(string $permission): self
     {
         return new self(lang('Auth.unknownPermission', [$permission]));
     }
+
+    public static function forUnauthorized(): self
+    {
+        return new self(lang('Auth.notEnoughPrivilege'));
+    }
 }

src/Exceptions/GroupException.php

@@ -0,0 +1,11 @@
+<?php
+
+declare(strict_types=1);
+
+namespace CodeIgniter\Shield\Exceptions;
+
+use CodeIgniter\Shield\Authorization\AuthorizationException;
+
+class GroupException extends AuthorizationException
+{
+}

src/Exceptions/PermissionException.php

@@ -0,0 +1,11 @@
+<?php
+
+declare(strict_types=1);
+
+namespace CodeIgniter\Shield\Exceptions;
+
+use CodeIgniter\Shield\Authorization\AuthorizationException;
+
+class PermissionException extends AuthorizationException
+{
+}