chore: Drive E-commerce via Website Item

- Removed Shopping Cart Settings
- Portal fully driven via E Commerce Settings
- All Item listing querying will happen via ProductQuery engine only
- Product Listing via Website Items
- removed redundant code
- Moved all website logic from Item to Website Item

erpnext/templates/generators/item/item_image.html

@@ -23,7 +23,7 @@
 		})
 	</script>
 	{% else %}
-	{{ product_image(website_image or image or 'no-image.jpg', alt=website_image_alt or item_name) }}
+	{{ product_image(doc.website_image or doc.image or 'no-image.jpg', alt=doc.website_image_alt or doc.item_name) }}
 	{% endif %}
 
 	<!-- Simple image preview -->