feat: add FormKit framework support and update dependencies

- Add `telecart_forms` table migration and default checkout form seeder
- Implement `FormsHandler` to fetch form schemas
- Update `OrderCreateService` to handle custom fields in order comments
- Add `update` method to QueryBuilder and Grammar
- Add `Arr::except` helper
- Update composer dependencies (Carbon, Symfony, PHPUnit, etc.)
- Improve `MigratorService` error handling
- Add unit tests for new functionality

frontend/admin/src/formkit.config.js

@@ -0,0 +1,24 @@
+import {ru} from '@formkit/i18n';
+import * as allIcons from '@formkit/icons';
+import {rootClasses} from './formkit.theme.mjs';
+
+// Собираем все иконки в плоский объект
+const icons = {};
+Object.values(allIcons).forEach(group => {
+    if (typeof group === 'object') {
+        Object.assign(icons, group);
+    }
+});
+
+const config = {
+    locales: {ru},
+    locale: 'ru',
+    icons: {
+        ...icons,
+    },
+    config: {
+        rootClasses,
+    },
+};
+
+export default config;