docs: add "Customizing Views"

Author: kenjis

docs/customization/views.md

@@ -0,0 +1,35 @@
+# Customizing Views
+
+Shield provides the default view files, but they are sample files.
+Customization is recommended.
+
+## Change $views
+
+Change values in `$views` in the **app/Config/Auth.php** file.
+
+For example, if you customize the login page, change the value for `'login'`:
+
+```php
+public array $views = [
+    'login'                       => '\App\Views\Shield\login', // changed this line.
+    'register'                    => '\CodeIgniter\Shield\Views\register',
+    'layout'                      => '\CodeIgniter\Shield\Views\layout',
+    'action_email_2fa'            => '\CodeIgniter\Shield\Views\email_2fa_show',
+    'action_email_2fa_verify'     => '\CodeIgniter\Shield\Views\email_2fa_verify',
+    'action_email_2fa_email'      => '\CodeIgniter\Shield\Views\Email\email_2fa_email',
+    'action_email_activate_show'  => '\CodeIgniter\Shield\Views\email_activate_show',
+    'action_email_activate_email' => '\CodeIgniter\Shield\Views\Email\email_activate_email',
+    'magic-link-login'            => '\CodeIgniter\Shield\Views\magic_link_form',
+    'magic-link-message'          => '\CodeIgniter\Shield\Views\magic_link_message',
+    'magic-link-email'            => '\CodeIgniter\Shield\Views\Email\magic_link_email',
+];
+```
+
+## Copy View File
+
+Copy the file you want to customize in **vendor/codeigniter4/shield/src/Views/**
+to the **app/Views/Shield/** folder.
+
+## Customize Content
+
+Customize the content of the view file in **app/Views/Shield/** as you like.

mkdocs.yml

@@ -106,6 +106,7 @@ nav:
     - quick_start_guide/using_authorization.md
   - Customization:
     - customization/table_names.md
+    - customization/views.md
     - customization/route_config.md
     - customization/redirect_urls.md
     - customization/validation_rules.md