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/stores/forms.js

@@ -0,0 +1,14 @@
+import {defineStore} from "pinia";
+import {apiPost} from "@/utils/http.js";
+
+export const useFormsStore = defineStore('forms', {
+  state: () => ({}),
+
+  actions: {
+    async getFormByAlias(alias) {
+      return await apiPost('getFormByAlias', {
+        alias,
+      });
+    }
+  },
+});

frontend/admin/src/stores/settings.js

@@ -63,6 +63,15 @@ export const useSettingsStore = defineStore('settings', {
       },
 
       mainpage_blocks: [],
+
+      forms: {
+        checkout: {
+          alias: '',
+          friendly_name: '',
+          is_custom: false,
+          schema: [],
+        }
+      },
     },
   }),