Feat: Extracting Cart and Checout from 3dealer

config/checkout.php

@@ -0,0 +1,44 @@
+<?php
+
+/*
+ * Per-site settings for the cart + checkout module (see
+ * Modules\Core\Providers\CheckoutModuleServiceProvider). Publishable —
+ * artisan vendor:publish --tag=core-config.
+ */
+return [
+
+    /*
+     * Name of the storefront's login route. The checkout's login tab and the
+     * confirmation page link to it with `?redirect=<checkout path>`, so the
+     * login page must send the shopper back there afterwards. null: no login
+     * offered in checkout at all.
+     */
+    'login_route' => 'login',
+
+    /*
+     * Name of the storefront's product-listing route — where confirmation()
+     * redirects a visit with no placed order to look at (session expired,
+     * direct navigation, a bookmark). route($this, $locale) must resolve.
+     */
+    'products_route' => 'products',
+
+    /*
+     * ISO 3166-1 alpha-3 code fixing checkout to a single country (a hidden
+     * field, forced server-side — no country picker shown at all). null (the
+     * default) gives the full country/region picker, for a multi-country
+     * store.
+     */
+    'store_country_iso3' => null,
+
+    /*
+     * The `purpose` tag CartController expects a product custom field's
+     * `file` answer to already carry (see Modules\Core\File\Models\File) —
+     * matches whatever purpose string the host's own upload endpoint
+     * (extending Modules\Core\File\Http\Controllers\UploadFileController)
+     * tags its stored files with. This module never reaches into that
+     * host controller directly; this config value is the one shared
+     * source of truth between the two.
+     */
+    'custom_field_upload_purpose' => 'custom-field-upload',
+
+];