Add product view tracking and related functionality

- Implemented product view tracking in ProductController to log user views.
- Added a relationship for viewed products in the User model.
- Introduced a method in ProductRepository to filter products viewed by a user.
- Updated API routes to include endpoint for retrieving viewed products.
- Commented out SMS notification logic in SendOrderCreatedNotification.
- Removed CreateOrderServiceTest as it is no longer needed.

app/Repositories/Ecommerce/Product/ProductRepository.php

@@ -150,6 +150,20 @@ class ProductRepository
         return $this;
     }
 
+    /**
+     * Filter by viewed by user
+     */
+    public function applyViewedBy($user): self
+    {
+        $this->queryBuilder
+            ->join('product_views', 'products.id', '=', 'product_views.product_id')
+            ->where('product_views.user_id', $user->id)
+            ->orderBy('product_views.updated_at', 'desc')
+            ->select('products.*');
+
+        return $this;
+    }
+
     /**
      * "Where IN" clause
      */