allow customizing entity class but default to CakeProducts entities - catalogs + categories

src/Model/Table/ProductCatalogsTable.php

@@ -47,6 +47,9 @@ class ProductCatalogsTable extends Table
         $this->setDisplayField('name');
         $this->setPrimaryKey('id');
 
+        $this->setEntityClass(
+            Configure::read('CakeProducts.ProductCatalogs.entity', 'CakeProducts\Model\Entity\ProductCatalog')
+        );
         $this->hasMany('ProductCategories', [
             'className' => 'CakeProducts.ProductCategories',
         ]);

src/Model/Table/ProductCategoriesTable.php

@@ -3,6 +3,7 @@ declare(strict_types=1);
 
 namespace CakeProducts\Model\Table;
 
+use Cake\Core\Configure;
 use Cake\Datasource\EntityInterface;
 use Cake\Datasource\ResultSetInterface;
 use Cake\ORM\Association\BelongsTo;
@@ -61,7 +62,9 @@ class ProductCategoriesTable extends Table
         $this->setTable('product_categories');
         $this->setDisplayField('name');
         $this->setPrimaryKey('id');
-
+        $this->setEntityClass(
+            Configure::read('CakeProducts.ProductCategories.entity', 'CakeProducts\Model\Entity\ProductCategory')
+        );
         $this->addBehavior('Tree');
 
         $this->belongsTo('ProductCatalogs', [