Shift private static variables from yaml file to classes (#828)

Remove private static variables from config.yml & add them to ProductImageExtension & MemberExtension classes
Add missing private static disable_security_token to ShoppingCartController class
Remove OrderProcessor.bcc_receipt_to_admin from config.yml (it is not used)

_config/config.yml

@@ -2,19 +2,6 @@
 Name: silvershop-config
 After: framework/routes#coreroutes
 ---
-
-SilverStripe\Security\Member:
-  login_joins_cart: true
-
-SilverShop\Extension\ProductImageExtension:
-  thumbnail_width: 140
-  thumbnail_height: 100
-  content_image_width: 200
-  large_image_width: 600
-
-SilverShop\Checkout\OrderProcessor:
-  bcc_receipt_to_admin: true
-
 SilverStripe\Admin\LeftAndMain:
   extra_requirements_css:
     - 'silvershop/core: client/dist/css/shopcms.css'

src/Cart/ShoppingCartController.php

@@ -31,6 +31,11 @@ class ShoppingCartController extends Controller
 {
     private static $url_segment = 'shoppingcart';
 
+    /**
+     * @config
+     */
+    private static string $disable_security_token = '';
+
     /**
      * Whether or not this controller redirects to the cart-page whenever an item was added
      *

src/Extension/MemberExtension.php

@@ -18,6 +18,11 @@
  */
 class MemberExtension extends DataExtension
 {
+    /**
+     * @config
+     */
+    private static bool $login_joins_cart = true;
+
     private static $has_many = [
         'AddressBook' => Address::class,
     ];

src/Extension/ProductImageExtension.php

@@ -20,6 +20,36 @@ class ProductImageExtension extends DataExtension
      */
     protected $owner;
 
+    /**
+     * @config
+     */
+    private static int $thumbnail_width = 140;
+
+    /**
+     * @config
+     */
+    private static int $thumbnail_height = 100;
+
+    /**
+     * @config
+     */
+    private static int $content_image_width = 200;
+
+    /**
+     * @config
+     */
+    private static int $content_image_height = 0;
+
+    /**
+     * @config
+     */
+    private static int $large_image_width = 600;
+
+    /**
+     * @config
+     */
+    private static int $large_image_height = 0;
+
     /**
      * @param bool $upscale [optional]
      * @return Image