Add wishlist feature and admin/analytics endpoints

Introduces a Wishlist model with related serializers, admin, and API endpoints for users to manage favorite products. Adds admin endpoints for wishlist management and a placeholder AnalyticsViewSet for future business intelligence features. Refactors permissions for commerce views, updates product filtering and ordering, and improves carrier and payment logic. Also includes minor VSCode settings and Zasilkovna client import updates.

backend/thirdparty/zasilkovna/client.py

@@ -3,6 +3,8 @@ from zeep.exceptions import Fault
 from zeep.transports import Transport
 from zeep.cache import SqliteCache
 
+from configuration.models import Configuration
+
 import tempfile
 import base64
 import logging
@@ -15,6 +17,7 @@ logger = logging.getLogger(__name__)
 WSDL_URL = os.getenv("PACKETA_WSDL_URL", "https://www.zasilkovna.cz/api/soap.wsdl")
 PACKETA_API_PASSWORD = os.getenv("PACKETA_API_PASSWORD")
 
+Configuration.g