update kirby to v5 and add refresh cache panel view button

public/kirby/config/areas/users/buttons.php

@@ -0,0 +1,20 @@
+<?php
+
+use Kirby\Cms\User;
+use Kirby\Panel\Ui\Buttons\SettingsButton;
+use Kirby\Panel\Ui\Buttons\ViewButton;
+use Kirby\Toolkit\I18n;
+
+return [
+	'users.create' => function (User $user, string|null $role = null) {
+		return new ViewButton(
+			dialog: 'users/create?role=' . $role,
+			disabled: $user->kirby()->roles()->canBeCreated()->count() < 1,
+			icon: 'add',
+			text: I18n::translate('user.create'),
+		);
+	},
+	'user.settings' => function (User $user) {
+		return new SettingsButton(model: $user);
+	}
+];